今田　正俊

東京大学理学系研究科物理学専攻博士課程修了（理学博士）職歴1981年4月～1986年10月1986年11月～1987年3月1987年4月～1990年3月1990年4月～1997年8月1997年9月～2006年3月2006年4月～2019年3月2018年12月～ 2019年4月～東京大学物性研究所助手埼玉大学教養部講師埼玉大学教養部助教授東京大学物性研究所助教授東京大学物性研究所教授東京大学工学系研究科教授上智大学理工学部客員教授豊田理化学研究所フェロー早稲田大学理工学術院上級研究員（研究院教授）学歴黎明・勃興期にあった電子計算機を活用する物理学（計算物理学）の研究を、物性物理学の分野で主導して推進するとともに、国内外でコミュニティの確立に貢献した。物性物理学分野唯一のスーパーコンピュータの物性研究所への導入を推進し、共同利用システムを確立し、その後の我が国の物性物理学における大規模計算を用いた研究の発展の基礎づくりに貢献した。種々の量子モンテカルロ法、変分波動関数法等の効率的計算手法を開発し、その後大きな発展を遂げている量子多体現象の理解に物理、化学の分野で貢献した。開発・改良した手法の中には連続空間量子モンテカルロ法、量子転送モンテカルロ法、量子分子動力学法、経路積分繰り込み群法、階層的第一原理強相関電子状態計算法、多変数変分モンテカルロ法、テンソルネットワークやニューラルネットワークを組み合わせた変分モンテカルロ法等が含まれる。強相関物質の電子構造の第一原理的かつ定量的で高精度な解明を可能にする数値計算手法を開発し、定量的標準手法として確立した。さらに手法を高温超伝導体などの多くの現実物質に適用してその精度の高さを検証するとともに、超伝導機構などの未知の物理の解明を行なった。より具体的には「フェルミレベル付近の疎構造と大局密構造が作る階層性」が強相関竜子系の電子構造が持つ必然的な特性であることに着目、積極利用し、繰り込み群的な手法で第一原理的に強相関電子系を解明する汎用性の高い手法（階層的第一原理強相関電子状態計算法、Multi-scale ab initio scheme for Correlated Electrons (MACE)、以下MACEと略称）を、21世紀初頭に提案した。手法開発も進め、MACEを構成する種々の有効模型導出手法の開発、さまざまな低エネルギーソルバーの開発も世界に先駆けて行った。また遷移金属化合物、有機導体などの多数の現実の強相関物質群に応用し精度を実証した。密度汎関数法を超えるこの方法は様々な物質への応用に大きく広がり、今世界的潮流となっている。低エネルギーソルバーとして世界的に追究されている方法に、(変分)モンテカルロ法、密度行列繰り込み群、テンソルネットワーク、経路積分繰り込み群などの高精度変分関数手法、動的平均場法及びその拡張、機械学習法等がある。これまで、以下の例のように多くの方法でこれらの手法の進歩と応用による強相関多体現象の解明に本質的貢献をした。 [1]経路積分に基づく連続空間での高次補正を含む量子モンテカルロ法を開発、長距離クーロン相互作用する２次元電子ガスで電子濃度と温度の平面で、ウィグナー結晶が量子融解する相図を近似なしに求め、15年後に高い定量精度で実験的に立証された。この量子モンテカルロ法は量子化学研究者により量子化学分野へも応用が広げられ、活発に利用されている。 [2]格子フェルミオン模型のための補助場法を用いた量子モンテカルロ法を開発整備した。さらに変分モンテカルロ法開発およびこれとテンソルネットワーク法、機械学習（ニューラルネットワーク法）との融合による高精度化も実現し、これを適用して銅酸化物超伝導体において、モット転移（強相関物質の金属絶縁体転移）の様相を解明した。また第一原理的に超伝導を含む実験相図を再現し、スピン・電荷の相分離・不均一化や長周期構造と超伝導との間の激しい競合の普逼性を解明した。加えて、強相関効果が生む創発的な「隠れた複合フェルミオン」を発見し、これにより牽引される高温超伝導などの新概念をもとに、超伝導機構の解明を行なった。鉄系超伝導体の第一原理有効ハミルトニアンも初めて導いて解き、強相関効果の本質的重要性を立証し、実験相図を再現するとともに計算科学手法で超伝導発現機構を特定した。 [3]法として他研究者が継承発展させた。後者を用いて、逼歴的な三角格子等フラストレートした反強磁性体等での量子スピン液体状態を予言し、その後有機導体(分子性結晶)の実験でスピン液体が発見された。またその後に発展させた高精度の変分モンテカルロ法を用いてギャップレスな量子スピン液体の様相をより詳細に解明した。 [4]ば超伝導の空間不均一との競合を克服するために、レーザー照射による非平衡状態が不均一を抑制して超伝導を増幅する機構を提案し、不均一を界面で克服し高温超伝導を実現するアイデアなど、強相関非平衡･非周期系研究を先導している。 [5]スピン軌道相互作用の生むトポロジカル相と電子相関の絡み合いを追究し、イリジウム酸化物の可動制御性のあるトポロジカルな金属磁壁界面を提唱し、その後実験立証された。
1. Kazuo Kitahara, Masatoshi Imada Kinetic-Equations for Binary-Mixtures Prog. Theor. Phys. Suppl. 64 65-73 (1978) 2. Masatoshi Imada Void Lattice Formation -Spinodal Decomposition of Vacancies J. Phys. Soc. Jpn. 45 1443-1448 (1978) 3. Masatoshi Imada Mass Dependence of the Sputtering Yield - Boundary Effect J. Phys. Soc. Jpn. 45 1957-1964 (1978) 4. Masatoshi Imada Linear Response of One Dimensional Non-Linear System 1 Dynamical Properties of the φ 4 -Chain J. Phys. Soc. Jpn. 47 699-705 (1979) 5. Masatoshi Imada Linear Response of One Dimensional Non-Linear System 2 J. Phys. Soc. Jpn. 49 1247-1254 (1980) 6. Masatoshi Imada Frequency-Dependent Mobility of the Sine-Gordon Chain J. Phys. Soc. Jpn. 50 401-408 (1981) 7. Masatoshi Imada Theory of Central Peak in Quasi-One-Dimensional Ferroelectric Systems - Applivcation to CSD 2 PO 4 J. Phys. Soc. Jpn. 50 1457-1464 (1981) 8. Masatoshi Imada, Kazuo Hida, Masakatsu Ishikawa Thermodynamics of the Massive-Thirring and the Quantum Sine-Gordon System Phys. Lett. A 90A 79-82 (1982) 9. Masatoshi Imada Finite Temperature Excitations of the XYZ Spin Chain Prog. Theor. Phys. 68 116-128 (1982) 10.  Masatoshi Imada Gelfand Levitan Method for Quantum Spin Systems Prog. Theor. Phys. 68 527-540 (1982) 11. Kazuo Hida, Masatoshi Masatoshi Imadaasakatsu Ishikawa Thermodynamics of the Quantum Sine-Gordon Model with Finite Winding Number Phys. Lett. A 93A 341-343 (1983) 12.  Masatoshi Imada Molecular-Dynamics Study of the φ 4 Chain J. Phys. Soc. Jpn. 52 179-183 (1983) 13. Masatoshi Imada, Kazuo Hida, Masakatsu Ishikawa The Finite Temperature Properties of the Massive Thirring Model and the Quantum Sine-Gordon Model J. Phys. C: Solid State Phys. 16 35-48 (1983) 14. Masatoshi Imada, Kazuo Hida, Masakatsu Ishikawa Statistical-Mechanics of One-Dimensional XY Z Spin Chain, Massive Thirring Model and Quantum Sine-Gordon System J. Magn. Magn. Mater. 31-34 1221-1222 (1983) 15. Masatoshi Imada Chaos Caused by the Soliton-Soliton Interaction J. Phys. Soc. Jpn. 52 1946-1956 (1983) 16. Kazuo Hida, Masatoshi Imada, Masakatsu Ishikawa Commensurate Incommensurate Crossover in Quantum Sine-Gordon Model J. Phys. C: Solid State Phys. 16 4945-4958 (1983) 17. Masakatsu Ishikawa, Kazuo Hida, Masatoshi Imada Isothermal Excitations of the Massive Thirring Model and the Quantum Sine-Gordon Model Prog. Theor. Phys. 72 710-721 (1984) 18.  Minoru Takahashi, Masatoshi Imada Monte-Carlo Calculation of Quantum-Systems J. Phys. Soc. Jpn. 53 963-974 (1984) 19.  Masatoshi Imada On the Monte-Carlo Method for Fermions in Multi-Dimensional Systems J. Phys. Soc. Jpn. 53 2861-2864 (1984) 20.  Minoru Takahashi, Masatoshi Imada Finite Temperature Properties of He-4 by the Quantum Monte-Carlo Method J. Phys. Soc. Jpn. 53 3871-3877 (1984) 21. Masatoshi Imada, Minoru Takahashi Quantum Monte- Carlo Simulation of a Two-Dimensional Electron-System- Melting of Wigner Crystal- J. Phys. Soc. Jpn. 53 3770-3781 (1984) 22.  Minoru Takahashi, Masatoshi Imada Monte-Carlo Calculation of Quantum -Systems 2 Higher-Order Correction J. Phys. Soc. Jpn. 53 3765-3769 (1984) 23.  Masatoshi Imada Pattern Selection And Instability in Nonlinear-Wave Equation - An Aspect of Soliton and Chaos Physica D 18 157-158 (1986) 24.  Masatoshi Imada Quantum Monte-Carlo Simulation of the Wigner Transition In Two-Dimensional Electron-Systems Surf. Sci. 170 112-114 (1986) 25.  Masatoshi Imada Melting of the Two-Dimensional Wigner Crystal in the Quantum Region J. Stat. Phys. 43 861-863 (1986) 26.  Masatoshi Imada Excitation Spectrum and Effects of Normal Impurities on Heavy Electron Superconductors J. Phys. Soc. Jpn. 55 3539-3544 (1986) 27.  Masatoshi Imada Excitation Spectrum and Effects of Normal Impurities on Heavy Electron Superconductors J. Phys. Soc. Jpn. 55 3539-3544 (1986) 28.  Masatoshi Imada, Minoru Takahashi Quantum Transfer Monte-Carlo Method for Finite Temperature Properties and Quantum Molec- ular Dynamics Method for Dynamic Correlation Functions J. Phys. Soc. Jpn. 55 3354-3361 (1986) 29. Masatoshi Imada and Douglas J. Scalapino Competition between the charge-density-wave and singlet-superconducting phases in a quasi-one- dimensional system Phys. Rev. B 34 3480-3482 (1986) 30.  Masatoshi Imada Superconducting Correlations and Pairing Mechanism in Two-Dimensional CuO 2 Lattice Jpn. J. Appl. Phys. Part 1 26 2046-2046 (1987) 31.  Masatoshi Imada Thermodynamic Properties of Spin 1/2 Triangular Antiferromagnet J. Phys. Soc. Jpn. 56 331-335 (1987) 32.  Masatoshi Imada Low-Temperature Properties of the Random Triangular Antiferromagnet J. Phys. Soc. Jpn. 56 881-884 (1987) 33.  Masatoshi Imada Superconducting vs Magnetic Correlations in the Two-Dimensional Hubbard-Model Jpn. J. Appl. Phys. Part 1 26 985-986 (1987) 34.  Masatoshi Imada On the Mechanism of High- T c Superconductivity J. Phys. Soc. Jpn. 11 3793-3796 (1987) 35. Masatoshi Imada, Naoto Nagaosa, Yasuhiro Hatsugai Magnetic Mechanism of Superconductivity in coupled Spin-Fermion Systems J. Phys. Soc. Jpn. 57 2901-2904 (1988) 36.  Masatoshi Imada A New Hybrid Algorithm for Fermion Simulations Applied to the Hubbard Model J. Phys. Šoc. Jpn. 57 42-45 (1988 ) 37.  Masatoshi Imada A Fermion Simulation Algorithm by Molecular Dynamics Techique Combined with Monte Carlo Method J. Phys. Soc. Jpn. 57 2689-2698 (1988 ) 38. Masatoshi Imada A Quantum Simulation Study of Superconducting Correlation in Electron Systems with Strong Correlation J. Phys. Soc. Jpn. 57 3128-3140 (1988 ) 39. Naoto Nagaosa, Yasuhiro Hatsugai, Masatoshi Imada. Spin-Wave Theory of the Two-Dimensional Heisenberg-Antiferromagnet Coupled with Localized Holes J. Phys. Soc. Jpn. 58 978-997 (1989) 40. Yasuhiro Hatsugai, Masatoshi Imada, Naoto Nagaosa. Pairing of Fermions Coulped with Spin-1/2 Heisenberg-System- Exact Diagonalization Study for Mechanism of High-T c Superconductivity J. Phys. Soc. Jpn. 58 1347-1371 (1989) 41. Masatoshi Imada, Yasuhiro Hatsugai Numerical-Studies on the Hubbard-Model and the t-J Model in 1-Dimensional and 2-Dimensions
J. Phys. Soc. Jpn. 58 3752-3780 (1989) 42.  Masatoshi Imada Chirality and Flux in Two-Dimensional Spin-1/2 Antiferromagnets —Exact Diagonalization Study— J. Phys. Soc. Jpn. 58 2650-265 (1989 ) 43.  Nobuo Furukawa and Masatoshi Imada Ground State Properties of the Coupled Spin Fermion Model in the Weak Coupling Region J. Phys. Soc. Jpn. 59 1771-1791 (1990) 44.  Masatoshi Imada Superconducting Correlation of the One-Dimensional t-J Model J. Phys. Soc. Jpn. 59 4121-4128 (1990) 45.  Masatoshi Imada Absence of Chirality and Flux in Quantum Spin Systems and the Hubbard Model in Two-Dimension Prog. Theor. Phys. Suppl. 101 391-402 (1990) 46. Nobuo Furukawa and Masatoshi Imada Minus Sign Problem in the Monte Carlo Simulation of Lattice Fermion Systems J. Phys. Soc. Jpn. 60 810-824 (1991) 47.  Masatoshi Imada Spin Dimer State Model and Spin-Phonon Coupling Model of Superconductivity J. Phys. Soc. Jpn. 60 1877-1880 (1991) 48.  Masatoshi Imada Superconducting Correlation of Two-Dimensional Hubbard Model near Half-Filling J. Phys. Soc. Jpn. 60 2740-2747 (1991) 49. Nobuo Furukawa and Masatoshi Imada Charge Gap, Charge Susceptibility and Spin Correlation in the Hubbard Model on a Square Lattice J. Phys. Soc. Jpn. 60 3604-3607 (1991) 50. Nobuo Furukawa and Masatoshi Imada Optimization of Initial State Vector in the Ground State Algorithm of Lattice Fermion Simulations J. Phys. Soc. Jpn. 60 3669-3674 (1991) 51.  Masatoshi Imada Dimerized Spin Model of Superconductivity Physica C 185-189 1421-1422 (1991) 52. Nobuo Furukawa and Masatoshi Imada Monte Carlo Simulation of Nearly Half-Filled Hubbard Model in the Ground State Physica C 185-189  1443-1444 (1991) 53.  Masatoshi Imada Numerical Results on Superconducting Correlation and Momentum Distribution in Repulsive and Attractive Hubbard Model
Physica C 185-189 1447-1448 (1991) 54.  Masatoshi Imada On Dimer Pairing Mechanism of Superconductivity J. Phys. Soc. Jpn. 61 423-427 (1992) 55.  Nobuo Furukawa and Masatoshi Imada Fixed Point of the Spin-Fermion Model Doped with a Single Fermion J. Phys. Soc. Jpn. 61 2048-2055 (1992) 56.  Nobuo Furukawa and Masatoshi Imada
    Two-Dimensional Hubbard Model — Metal Insulator Transition Studied by Monte Carlo Calcula- tion J. Phys. Soc. Jpn. 61 3331-3354 (1992) 57. Masatoshi Imada, Nobuo Furukawa and T. Maurice Rice Crossover of Spin Correlations in the One-Dimensional Hubbard Model J. Phys. Soc. Jpn. 61 3861-3864 (1992) 58.  Masatoshi Imada Spin Peierls Fluctuation and Nonlinear Excitations in One-Dimensional Systems Prog. Theor. Phys. Suppl. 113 203-213 (1993) 59.  Masatoshi Imada Two Types of Mott Transitions J. Phys. Soc. Jpn. 62 1105-1108 (1993) 60.  Masatoshi Imada Spin Peierls Fluctuation and Nonlinear Excitations in One-Dimensional Systems Prog. Theor. Phys. Suppl. 113 203-213 (1993) 61. Nobuo Furukawa and Masatoshi Imada Metal-Insulator Transition in the Two-Dimensional Hubbard Model
Physica B 186-188 931-934 (1993) 62.  Masatoshi Imada Spin-Peierls Fluctuation and Dimerization: A Possible Mechanism of Superconductivity Physica B 186-188 822-827 (1993) 63.  Nobuyuki Katoh and Masatoshi Imada Phase Diagram of S = 1/2 Antiferromagnetic Heisenberg Model on a Dimerized Square Lattice J. Phys. Soc. Jpn. 62 3728-3740 (1993) 64.  Masatoshi Imada Transitions to incompressible states Springer Ser. Solid-State Sci. 118 203-209 (1994) 65. Nobuo Furukawa and Masatoshi Imada Mass anomaly in the Hubbard model near half-filling Springer Ser. Solid-State Sci. 118 210-214 (1994) 66.  Masatoshi Imada Theory of Antiferromagnetic Correlations in High-T c Cuprates J. Phys. Soc. Jpn. 63 851-854 (1994) 67. Michiyasu Mori, Hidetoshi Fukuyama and Masatoshi Imada Towards the Mott Transition in One Dimension J. Phys. Soc. Jpn. 63 1639-1642 (1994) 68.  Masatoshi Imada Mott Transition and Transition to Incompressible States -Variety and Universality- J. Phys. Soc. Jpn. 63 3059-3077 (1994) 69.  Nobuyuki Katoh and Masatoshi Imada Phase Diagram of S = 1/2 Quasi-One-Dimensional Heisenberg Model with Dimerized Antiferro- magnetic Exchange J. Phys. Soc. Jpn. 63 4529-4541 (1994) 70.  Masatoshi Imada Cuprate Superconductors as Anomalous Metallic States near the Mott Insulator Physica C 235 2283-2284 (1994) 71.  Masatoshi Imada Classification scheme of the metal-insulator transition and anomalous metals
Springer Ser. Solid-State Sci. 119 3-14 (1995) 72.  Nobuyuki Katoh and Masatoshi Imada Spin Gaps in S = 1/2 Anisotropic-Two-Dimensional Heisenberg Model with Dimerized Antiferro- magnetic Exchange —Relation to Ladder Model and Haldane Gap System- J. Phys. Soc. Jpn. 64 1437-1438 (1995) 73. Fakher F. Assaad and Masatoshi Imada. Hall Coefficient for the Hubbard Model Phys. Rev. Lett. 74 3868-3871 (1995) 74.  Masatoshi Imada Critical Properties of Metal-Insulator Transition in Low Dimensions J. Low Temp. Phys. 99 437-442 (1995) 75.  Masatoshi Imada Metal-Insulator Transition of Correlated Systems and Origin of Unusual Metal J. Phys. Soc. Jpn. 64 2954-2971 (1995) 76. Youichirou Iino and Masatoshi Imada Crossover of Spin Correlations in One-Dimensional Hubbard Model Studied by Quantum Monte Carlo Method J. Phys. Soc. Jpn. 64 4392-4401 (1995) 77. Kenji Yonemitsu Masatoshi Imada Spin gap in one-dimensional electron-phonon systems Mol. Cryst. Liq. Cryst. Sci. Technol., Sect. A 285 223-228 (1996) 78. Fakher F. Assaad and Masatoshi Imada Stable Quantum Monte Carlo Algorithm for T = 0 Calculation of Imaginary Time Green Functions J. Phys. Soc. Jpn. 65 189-194 (1996) 79.  Fakher F. Assaad and Masatoshi Imada Insulator-Metal Transition in the One- and Two-Dimensional Hubbard Models Phys. Rev. Lett. 76 3176-3179 (1996) 80.  Masatoshi Imada Fermi Liquid Phenomenology Combined with Scaling Theory of the Metal-Insulator Transition Physica  Č 263 49-53 (1996) 81. Fakher F. Assaad and Masatoshi Imada High-Frequency Hall Coefficient for the Two-Dimensional Hubbard Model Physica 82.  Kenji Yonemitsu and Masatoshi Imada Electron-Phonon Interaction and Spin Gap in Nealy-Half-Filled Correlated Electron Systems Physica C 263 82-85 (1996) 83.  Nobuyuki Katoh and Masatoshi Imada Spin Gap in Generalized Spin Models with Dimerization and the Model for CaV 4 O 9 Physica C 263 114-117 (1996) 84. Yukitoshi Motome, Nobuyuki Katoh, Nobuo Furukawa and Masatoshi Imada Impurity Effect on Spin Ladder System J. Phys. Soc. Jpn. 65 1949-1952 (1996) 85. Yukitoshi Motome and Masatoshi Imada Superfluid-Insulator Transition of Interacting Multi-Component Bosons — Gutzwiller Variational and Quantum Monte Carlo Study- J. Phys. Soc. Jpn. 65 2135-2145 (1996) 86. Nobuo Furukawa, Fakher F. Assaad and Masatoshi Imada Critical Exponents of the Metal-Insulator Transition in the Two-Dimensional Hubbard Model J. Phys. Soc. Jpn. 65 2339-2340 (1996) 87.  Kenji Yonemitsu and Masatoshi Imada Spin-Gap Phase in Nearly Half-Filled One-Dimensional Conductors Coupled with Phonons Phys. Rev. B 54 2410-2420 (1996) 88. Takeo Kato and Masatoshi Imada Macroscopic Quantum Tunneling of a Fluxon in a Long Josephson Junction J. Phys. Ŝoc. Jpn. 65 2963-2975 (1996) 89. Fakher F. Assaad, Masatoshi Imada and Douglas J. Scalapino Quantum Transition between an Antiferromagnetic Mott Insulator and d x 2 – y 2 Superconductor in Two Dimensions Phys. Rev. Lett. 77 4592-4595 (1996) 90. Youichirou Iino and Masatoshi Imada Effects of Nonmagnetic Impurity Doping on Spin Ladder System J. Phys. Soc. Jpn. 65 3728-3731 (1996) 91. Masatoshi Imada and Youichirou Iino Scaling Properties of Antiferromagnetic Transition in Coupled Spin Ladder Systems Doped with Nonmagnetic Impurities J. Phys. Soc. Jpn. 66 568-571 (1997) 92. Takeo Kato and Masatoshi Imada Vortices and Quantum Tunneling in Current-Biased 0- π -0 Josephson Junctions of d -Wave Super- conductors J. Phys. Soc. Jpn. 66 1445-1449 (1997) 93.  Yukitoshi Motome and Masatoshi Imada A Quantum Monte Carlo Method and Its Applications to Multi-Orbital Hubbard Models J. Phys. Soc. Jpn. 66 1872-1875 (1997) 94. Hirokazu Tsunetsugu and Masatoshi Imada Transport Properties of Doped t-J Ladders J. Phys. Soc. Jpn. 66 1876-1879 (1997) 95.  Masatoshi Imada Strongly correlated electrons studied by numerical and scaling approaches J. Korean Phy. Soc. 31 292-S297 (1997) 96. Matthias Troyer, Masatoshi Imada and Kazuo Ueda Critical Exponents of the Quantum Phase Transition in a Planar Antiferromagnet J. Phys. Soc. Jpn. 66 2957-2960 (1997) 97. Fakher F. Assaad, Masatoshi Imada and Douglas J. Scalapino Charge and spin structures of a d z 2 _ v 2 superconductor in the proximity of an antiferromagnetic Mott insulator
Phys. Rev. B 56 15001-15014 (1997) 98.  Masatoshi Imada Suppressed Coherence due to Orbital Correlations in the Ferromagnetically Ordered Metallic Phase of Mn Compounds J. Phys. Soc. Jpn. 67 45-48 (1998) 99.  Nobuyuki Katoh and Masatoshi Imada Orbital Order Effect of Two-Dimensional Spin Gap System for CaV 4 O 9 J. Phys. Soc. Jpn. 67 564-575 (1998) 100. Hirokazu Tsunetsugu and Masatoshi Imada Dynamic Exponent of t-J and t-J-W Models J. Phys. Soc. Jpn. 67 1864-1867 (1998) Takeo Kato and Masatoshi Imada Thermodynamics and Optical Conductivity of a Dissipative Carrier in a Tight Binding Model J. Phys. Soc. Jpn. 67 2828-2846 (1998) 102.  Yukitoshi Motome and Masatoshi Imada Numerical Study for the Ground State of Multi-Orbital Hubbard Models J. Phys. Soc. Jpn. 67 3199-3215 (1998) 101. 103.  Fakher F. Assaad and Masatoshi Imada Doping Induced Metal-Insulator Transition in Two-Dimensional Hubbard, t-U , and Extended Hub- bard, t-U-W , Models Phys. Rev. B. 58 1845-1852 (1998) 104. Masatoshi Imada, Atsushi Fujimori and Yoshinori Tokura Metal-Insulator Transitions Rev. Mod. Phys. 70 1039-1263 (1998) 105.  Takeo Kato, Masatoshi Imada Thermodynamics and transport properties of a dissipative particle in a tight-binding model N-HOLLAND D  269-272 (1999) 106. Yukitoshi Motome and Masatoshi Imada Effects of Electron Correlation, Orbital Degeneracy and Jahn-Teller Coupling in Perovskite Man- ganites J. Phys. Soc. Jpn. 68 16-19 (1999) 107. Hiroki Nakano and Masatoshi Imada Optical Conductivity of the Two-Dimensional Hubbard Model J. Phys. Soc. Jpn. 68 1458-1459 (1999) 108.  Fakher F. Assaad and Masatoshi Imada Unusually Flat Dispersion Relation in the Two-Dimensional Hubbard Model and Restoration of Coherence by Addition of Pair-Hopping Processes Eur. Phys. J. B. 10 595-598 (1999) 109. Hiroki Nakano, Yukitoshi Motome and Masatoshi Imada. Effects of Orbital Degeneracy and Electron Correlation on Charge Dynamics in Perovskite Man- ganese Oxides J. Phys. Soc. Jpn. 68 2178-2181 (1999) 110. Shigeki Onoda and Masatoshi Imada d x 2 – y 2 Wave Pairing Fluctuations and Pseudo Spin Gap in Two-Dimensional Electron Systems J. Phys. Soc. Jpn. 68 2762-2772 (1999) 111. Yukitoshi Motome, Hiroki Nakano and Masatoshi Imada. Metal-Insulator Transition in Mn Perovskite Compounds Materials Science and Engineering B 63 58-64 (1999) 112.  Yukitoshi Motome and Masatoshi Imada Ordering and Fluctuation of Orbital and Lattice Distortion in Perovskite Manganese Oxides Phys. Rev. B 60 7921-7938 (1999) 113. Hirokazu Tsunetsugu and Masatoshi Imada Control of Superconducting Correlations in High- T c Cuprates J. Phys. Soc. Jpn. 68 3162-3165 (1999) 114. Masatoshi Imada, Fakher F. Assaad, Hirokazu Tsunetsugu and Yukitoshi Motome Metal-Insulator and Superconductor-Insulator Transitions in Correlated Electron Systems Physics and Chemistry of Transition Metal Oxides, ed.  by H. Fukuyama and N. Nagaosa (Springer Verlag, Berlin, 1999) 125 120-135 (1999) 115.  Masanori Kohno and Masatoshi Imada Enhancement of Pairing Correlation and Spin Gap through suppression of Single-Particle Disper- sion in One-Dimensional Models J. Phys. Soc. Jpn. 69 25-28 (2000) 116. Takeo Kato and Masatoshi Imada Quantum Effects in Resistance-Shunted Josephson Junctions J. Phys. Soc. Jpn. 69 203-212 (2000) 117.  Masatoshi Imada and Masanori Kohno Superconductivity from Flat Dispersion Designed in Doped Mott Insulators Phys. Rev. Lett. 84 143-146 (2000) 118. Shigeki Onoda and Masatoshi Imada Single-Particle Pseudogap in Two-Dimensional Electron Systems J. Phys. Soc. Jpn. 69 312-315 (2000) 119. Masatoshi Imada, Masanori Kohno and Hirokazu Tsunetsugu Quantum Effects in Resistance-Shunted Josephson Junctions Physica B 280 303-307 (2000) 120.  Hirokazu Tsunetsugu, Masatoshi Imada Electron coherence and pairing correlations in the 2D correlated electron system PHYSICA B 281 790-791 (2000) 121. Shigeki Onoda and Masatoshi Imada How Do We Understand the Single-Particle Pseudogap in High-T c Cuprates? Physica B 281, 282 792-793 (2000) 122. Hirokazu Tsunetsugu and Masatoshi Imada Electron Coherence and Pairing Correlations in the 2D Correlated Electron System Physica B 281 790-791 (2000) 123. Shigeki Onoda and Masatoshi Imada d x 2 – y 2 Wave Pairing Fluctuations and Pseudo Spin Gap in Two-Dimensional Electron Systems Physica B 284-288 671-672 (2000) 124. Hiroki Nakano, Yukitoshi Motome and Masatoshi Imada Charge dynamics of Perovskite Manganese Oxides - Effects of Orbital Degeneracy, Electron Cor- relation and Jahn-Teller distortion Physica B 284-288 1406-1407 (2000) 125. Beat Ammon and Masatoshi Imada Effect of the Orbital Level Difference in Doped Spin-1 Chains J. Phys. Soc. Jpn. 69 1946-1949 (2000) 126.  Masahito Mochizuki and Masatoshi Imada Magnetic Phase Transition of the Perovskite-type Ti Oxides J. Phys. Soc. Jpn. 69 1982-1985 (2000) 127.  Masatoshi Imada and Tsuyoshi Kashima Path-Integral Renormalization Group Method for Numerical Study of Strongly Correlated Electron Systems J. Phys. Soc. Jpn. 69 2723-2726 (2000) 128. Shigeki Onoda, Masatoshi Imada Pseudogap and superconducting fluctuations in High-T c cuprates J. Phys. Soc. Jpn. 69 32-38 (2000) 129. Hiroki Nakano1, Yukitoshi Motome and Masatoshi Imada Incoherent Charge Dynamics in Perovskite Manganese Oxides J. Phys. Soc. Jpn. 69 1282-1285 (2000) 130. Beat Ammon and Masatoshi Imada Spin-1 chain doped with mobile S = 1/2 fermions Phys. Rev. Lett 85 1056-1059 (2000) 131. Masanori Kohno and Masatoshi Imada Influence of a Flat Dispersion on the Superconducting Instability in Doped Mott Insulators J. Phys. Chem. Solids 62 225-229 (2001) 132. Shigeki Onoda and Masatoshi Imada Theoretical Interpretation of the Variety of Spin Gap in High- T c Cuprates J. Phys. Chem. Solids 62 221-224 (2001) 133.  Masatoshi Imada and Shigeki Onoda Theory of Electron Differentiation, Flat Dispersion and Pseudogap Phenomena J. Phys. Chem. Solids 62 47-51 (2001) 134. Beat Ammon and Masatoshi Imada Doped Two Orbital Chains with Strong Hund's Rule Couplings - Ferromagnetism, Spin Gap, Singlet and Triplet Pairings J. Phys. Soc. Jpn. 70 547-557 (2001) 135. Shigeki Onoda and Masatoshi Imada Operator Projection Method Applied to the Single-Particle Green 's Function in the Hubbard Model J. Phys. Soc. Jpn. 70 632-635 (2001) 136.  Takeo Kato, Masatoshi Imada Dissipative quantum effects in small Josephson junctions PHYSICA C 352 149-152 (2001) 137.  Masatoshi Imada Superconductivity Driven by the Interband Coulomb Interaction and Implications for the Super- conducting Mechanism of MgB2 J. Phys. Soc. Jpn. 70 1218-1221 (2001) 138. Masahito Mochizuki and Masatoshi Imada Magnetic and Orbital States and Their Phase Transition of the Perovskite-Type Ti Oxides: Strong Coupling Approach J. Phys. Soc. Jpn. 70 1777-1789 (2001) 139. Tsuyoshi Kashima and Masatoshi Imada Path-Integral Renormalization Group Method for Numerical Study on Ground States of Strongly Correlated Electronic Systems J. Phys. Soc. Jpn. 70 2287-2299 (2001) 140. Masahito Mochizuki and Masatoshi Imada Origin of G-type Antiferromagnetism and Orbital-Spin Structures in LaTiO 3 J. Phys. Soc. Jpn. 70 2872-2875 (2001) 141. Shigeki Onoda and Masatoshi Imada Filling-Control Metal-Insulator Transition in the Hubbard Model Studied by the Operator Projec- tion Method J. Phys. Soc. Jpn. 70 3398-3418 (2001) 142.  Masatoshi Imada and Shigeki Onoda Pseudogap and Kinetic Pairing Under Critical Differentiation of Electrons in Cuprate Supercon- ductors. Proceedings of Advanced Research Workshop on Open Problems in Strongly Correlated Electron Systems in Bled 2000, eds. J. Bonca et al. (Kluwer, Dordrecht),  69-76 (2001) 143.  Masanori Kohno, Masatoshi Imada Systematic Improvement of Wavefunctions in the Variational Monte Carlo Method for the t-J Model J. Phys. Chem. Solids 63 1563-1566 (2002) 144. Takahiro Mizusaki and Masatoshi Imada Extrapolation Method for Shell Model Calculations Phys. Rev. C 65 064319(1-4) (2002) 145.  Yasuhiro Saiga and Masatoshi Imada Competition between Spin Exchange and Correlated Hopping J. Phys. Chem. Solids 63 1531-1535 (2002) 146. Hidekazu Morita, Shinji Watanabe and Masatoshi Imada Nonmagnetic Insulating States near the Mott Transitions on Lattices with Geometrical Frustration and Implications for κ-(ET)2Cu2(CN)3 J. Phys. Soc. Jpn. 71 2109-2112 (2002) 147.  Yohei Noda and Masatoshi Imada Quantum Phase Transitions to Charge Order and Wigner Crystal Under Interplay of Lattice Com- mensurability and Long-Range Coulomb Interaction Phys. Rev. Lett. 89 176803(1-4) (2002) 148. Shigeki Onoda and Masatoshi Imada Operator Projection Theory for Electron Differentiation in Underdoped Cuprate Superconductors J. Phys. Chem. Solids 63 2225-2231 (2002) 149. Shigeki Onoda and Masatoshi Imada Mott Transitions in the Two-Dimensional Half-Filled Hubbard Model:  Correlator Projection Method with Projective Dynamical Mean-Field Approximation Phys. Rev. B 67 161102(1-4) (2003) 150. Takahiro Mizusaki and Masatoshi Imada Precise Estimation of Shell Model Energy by Second-Order Extrapolation Method Phys. Rev. C 67 041301(1-5) (2003) 151. Masatoshi Imada, Takahiro Mizusaki, Shinji Watanabe Path-integral renormalization group method AIP Conf. Proc. 690 207-215 (2003) 152. Masatoshi Imada, Shigeki Onoda, Takahiro Mizusaki.and Shinji Watanabe Tools for Studying Quantum Emergence near Phase Transitions AIP Conf. Proc. 695 75-91 (2003) 153. Masahito Mochizuki and Masatoshi Imada Orbital-Spin Structure and Coupling to Lattice in RTiO 3 with R=La,Pr,Nd and Sm Phys. Rev. Lett. 91 167203(1-4) (2003) 154. Takahiro Mizusakiand Masatoshi Imada Quantum-Number Projection in the Path-Integral Renormalization Group Method Phys. Rev. B 69 125110(1-10) (2004) 155. Shigeki Onoda, Masatoshi Imada Finite-temperature Mott transition in the two-dimensional Hubbard model J. Magn. Magn. Mater. 272-276 E275-E276 (2004) 156.  Masatoshi Imada Quantum Mott Transition and Multi-Furcating Criticality J. Phys. Soc. Jpn. 73 1851-1863 (2004) 157. Masahito Mochizuki and Masatoshi Imada G-type Antiferromagnetism and Orbital Ordering due to the Crystal Field from the Rare-earth Ions Induced by the GdFeO 3 -type Distortion in RTiO 3 with R=La,Pr,Nd and Sm J. Phys. Soc. Jpn. 73 1833-1850 (2004) 158. Shinji Watanabe and Masatoshi Imada Precise Determination of Phase Diagram for Two-Dimensional Hubbard Model with Filling- and Bandwidth-Control Mott Transitions: Grand-Canonical Path-Integral Renormalization Group Ap- proach J. Phys. Soc. Jpn. 73 1251-1266 (2004) 159. Masahito Mochizuki and Masatoshi Imada Orbital Physics in the Perovskite Ti Oxides New J. Phys. 6 154(1-42) (2004) 160. Ferdi Aryasetiawan, Masatoshi Imada, Antoine Georges, Gabriel Kotliar, Silke Biermann and Alexander I. Lichtenstein ture Calculations Phys. Rev. B 70 195104(1-8) (2004) 161. Shinji Watanabeand Masatoshi Imada Thermodynamic Relations in Correlated Systems J. Phys. Soc. Jpn. 73 3341-3350 (2004) 162.  I.V. Solovyev and Masatoshi Imada Screening of Coulomb interactions in transition metals Phys. Rev. B 71 45103(1-11) (2005) 163. Hiroki Nakano, Yoshinori Takahashi and Masatoshi Imada Charge susceptibility of the Hubbard chain with next-nearest-neighbor hopping Physica B-Condensed Matter 359 657-659 (2005) 164.  Masatoshi Imada Quantum Mott Transition and Superconductivity J. Phys. Soc. Jpn. 74 859-862 (2005) 165.  Masatoshi Imada Universality classes of metal-insulator transitions in strongly correlated electron systems and mech- anism of high-temperature superconductivity Phys. Rev. B 72 075113(1-18) (2005) 166.  Kota Hanasaki and Masatoshi Imada Charge Ordered Insulator without Magnetic Order Studied by Correlator Projection Method J. Phys. Soc. Jpn. 74 2769-2782 (2005) 167.  Yoshiki Imai, Igor Solovyev and Masatoshi Imada Electronic structure of strongly correlated systems emerging from combining path-integral renor- malization group with the density-functional approach Phys. Rev. Lett. 95 176405(1-4) (2005) 168. Takahiro Mizusaki, Masatoshi Imada Path-integral renormalization group method with quantum-number projection Comput. Phys. Commun. 169 408-411 (2005) 169.  Masatoshi Imada, Takahiro Mizusaki Algorithms and applications of path-integral renormalization group method AIP Conf. Proc. 816 78 (2006) 170. Shinji Watanabe, Masatoshi Imada and Kazumasa Miyake Superconductivity Emerging near Quantum Critical Point of Valence Transition J. Phys. Soc. Jpn. 75 043710(1-4) (2006) 171. Takahiro Misawa, Youhei Yamaji and Masatoshi Imada Tricritical Behavior in Charge-Order System J. Phys. Soc. Jpn. 75 064705(1-20) (2006) 172. Takahiro Mizusaki and Masatoshi Imada Gapless quantum spin liquid, stripe, and antiferromagnetic phases in frustrated Hubbard models in two dimensions Phys. Rev. B 74 014421(1-10) (2006) 173.  Kota Hanasaki and Masatoshi Imada Fate of Quasiparticle at Mott Transition and Interplay with Lifshitz Transition Studied by Corre- lator Projection Method J. Phys. Soc. Jpn. 75 084702(1-11) (2006) 174. Takahiro Misawa, Youhei Yamaji and Masatoshi Imada Quantum  Critical " Opalescence " around Metal-Insulator Transitions J. Phys. Soc. Jpn. 75 083705(1-4) (2006) 175. Youhei Yamaji, Takahiro Misawa and Masatoshi Imada Quantum and Topological Criticalities of Lifshitz Transition in Two-Dimensional Correlated Elec- tron Systems J. Phys. Soc. Jpn. 75 094719(1-16) (2006) 176. Yoshiki Imai and Masatoshi Imada Ground State Properties and Optical Conductivity of the Transition Metal Oxide Sr 2 VO 4 J. Phys. Soc. Jpn. 75 094713(1-17) (2006) 177.  Yuichi Otsuka and Masatoshi Imada First-Principles Computation of YVO 3 : Combining Path-Integral Renormalization Group with Density-Functional Approach J. Phys. Soc. Jpn. 75 124707(1-8) (2006) 178. Zaanen, J, Chakravarty, S, Senthil, T, et al. Towards a complete theory of high T c Nat. Phys. 2 138-143 (2006) 179. Takeshi Aimi and Masatoshi Imada Does Simple Two-Dimensional Hubbard Model Account for High-T c Superconductivity in Copper Oxides? J. Phys. Soc. Jpn. 76 113708(1-4) (2007) 180. Shinji Watanabe and Masatoshi Imada What is Minimal Model of 3He Adsorbed on Graphite? —Importance of Density Fluctuations in 4/7 Registered Solid J. Phys. Soc. Jpn. 76 113603(1-4) (2007) 181. Takahiro Misawa, Youhei Yamaji and Masatoshi Imada Marginal quantum criticality of metal-insulator transitions J. Magn. Magn. Mater. 310 925-927 (2007) 182. Daisuke Tahara, Yukitoshi Motome and Masatoshi Imada Antiferromagnetic Ising Model on Inverse Perovskite Lattice J. Phys. Soc. Jpn. 76 013708(1-4) (2007) 183. Shinji Watanabe, Masatoshi Imada and Kazumasa Miyake Quantum valence criticality and superconductivity J. Magn. Magn. Mater. 310 841-843 (2007) 184. Youhei Yamaji, Takahiro Misawa and Masatoshi Imada Quantum criticalities induced by Lifshitz transitions J. Magn. Magn. Mater. 310 838-840 (2007) 185. Hiroki Nakano, Yoshinori Takahashi and Masatoshi Imada Drude Weight of the Two-Dimensional Hubbard Model –Reexamination of Finite-Size Effect in Exact Diagonalization Study- J. Phys. Soc. Jpn. 76 034705(1-9) (2007) 186. Takahiro Misawa and Masatoshi Imada Quantum criticality around metal-insulator transitions of strongly correlated electron systems Phys. Rev. B 75 115121(1-23) (2007) 187.  Youhei Yamaji, Takahiro Misawa and Masatoshi Imada Quantum Metamagnetic Transitions Induced by Changes in Fermi-Surface Topology: Applications to a Weak Itinerant-Electron Ferromagnet ZrZn2 J. Phys. Soc. Jpn. 76 063702(1-4) (2007) 188. Y. Z. Zhang and Masatoshi Imada Pseudogap and Mott Transition Studied by Cellular Dynamical Mean Field Theory Phys. Rev. B 76 045108(1-5) (2007) 189.  Yoshiki Imai, Yuichi Otsuka and Masatoshi Imada Applications of path-integral renormalization group method combined with density functional the- J. Phys. : Condens. Matter 19 365230(1-8) (2007) 190. Takeshi Aimi and Masatoshi Imada Gaussian-Basis Monte Carlo Method for Numerical Study on Ground States of Itinerant and Strongly Correlated Electron Systems J. Phys. Soc. Jpn. 76 084709(1-22) (2007) 191. Kazuma Nakamura, Yoshihide Yoshimoto, Ryotaro Arita, Shinji Tsuneyuki and Masatoshi Imada Optical Absorption Study by ab initioDownfolding Approach: Application to GaAs Phys. Rev. B 77 195126(1-13) (2008) 192.  Daisuke Tahara and Masatoshi Imada Variational Monte Carlo Study of Electron Differentiation around Mott Transition J. Phys. Soc. Jpn. 77 093703(1-4) (2008) 193.  Daisuke Tahara and Masatoshi Imada Variational Monte Carlo Method Combined with Quantum-Number Projection and Multi-Variable Optimization J. Phys. Soc. Jpn. 77 114701(1-15) (2008) 194. Takahiro Misawa, Youhei Yamaji and Masatoshi Imada YbRh2Si2: Quantum Tricritical Behavior in Itinerant Electron Systems J. Phys. Soc. Jpn. 77 093712(1-4) (2008) 195. Kazuma Nakamura, Ryotaro Arita and Masatoshi Imada Ab initio Derivation of Low-Energy Model for Iron-Based Superconductors LaFeAsO and LaFePO J. Phys. Soc. Jpn. 77 093711(1-4) (2008) 196. Hiroshi Shinaoka and Masatoshi Imada Soft Hubbard Gaps in Disordered Itinerant Models with Short-Range Interaction Phys. Rev. Lett. 102 016404(1-4) (2009) 197. Shiro Sakai, Yukitoshi Motome and Masatoshi Imada Evolution of Electronic Structure of Doped Mott Insulators: Reconstruction of Poles and Zeros of Green's Function Phys. Rev. Lett. 102 056404(1-4) (2009) 198. Shinji Watanabe and Masatoshi Imada On Proximity of 4/7 Solid Phase of 3He Adsorbed on Graphite -Origin of Specific Heat Anomalies in Hole-Doped Density Ordered Solid- J. Phys. Soc. Jpn. 78 033603(1-4) (2009) 199. Takahiro Misawa, Youhei Yamaji and Masatoshi Imada Spin Fluctuation Theory for Quantum Tricritical Point Arising in Proximity to First-Order Phase Transitions: Applications to Heavy-Fermion Systems, YbRh 2 Si 2 , CeRu 2 Si 2 , and β -YbAlB 4 J. Phys. Soc. Jpn. 78 084707(1-15) (2009) 200.  Hiroshi Shinaoka and Masatoshi Imada Single-Particle Excitations under Coexisting Electron Correlation and Disorder: A Numerical Study of the Anderson-Hubbard Model J. Phys. Soc. Jpn. 78 094708(1-20) (2009) 201. Kazuma Nakamura, Yoshihide Yoshimoto, T. Kosugi, Ryotaro Arita and Masatoshi Imada Ab initio Derivation of Low-Energy Model for κ -ET Type Organic Conductors J. Phys. Soc. Jpn. 78 083710(1-4) (2009) 202. Takashi Miyake, Ferdi Aryasetiawanand Masatoshi Imada Ab initio Procedure for Constructing Effective Models of Correlated Materials with Entangled Band Structure Phys. Rev. B 80 155134(1-6) (2009) 203. R. Watanabe and Masatoshi Imada Transition from Band Insulator to Bose-Einstein-Condensate Superfluid and Mott State of Cold Fermi Gases with Multiband Effects in Optical Lattices Phys. Rev. A 80 043624(1-11) (2009) 204. Shiro Sakai, Yukitoshi Motomeand Masatoshi Imada. Roles of Zeros of the Green Function in Fermi Arc and Non-Fermi Liquid in the Two-Dimensional Hubbard Model Physica B 404 3183-3186 (2009) 205.  Hiroshi Shinaoka, Masatoshi Imada Theory of Electron Transport near Anderson-Mott Transitions J. Phys. Soc. Jpn. 79 113703(1-4) (2010) 206. Motoaki Hirayama and Masatoshi Imada Systematic Control of Doped Carrier Density without Disorder at Interface of Oxide Heterostruc- tures
J. Phys. Soc. Jpn. 79 034704(1-7) (2010) 207. Takashi Miyake, Kazuma Nakamura, Ryotaro Arita and Masatoshi Imada Comparison of ab initioLow-Energy Models for LaFePO, LaFeAsO, BaFe 2 As 2 , LiFeAs, FeSe and FeTe: Electron Correlation and Covalency J. Phys. Soc. Jpn. 79 044705(1-20) (2010) 208. Masatoshi Imada, Takahiro Misawa and Youhei Yamaji Unconventional Quantum Criticality Emerging as a New Common Language of Transition-Metal Compounds, Heavy-Fermion Systems, and Organic Conductors J. Phys.: Condens. Matter 22 164206(1-9) (2010) 209.  Ryui Kaneko, Takahiro Misawa, Masatoshi Imada. Magnetization Step in Spatially Distorted Heisenberg Kagome Antiferromagnets J. Phys. Soc. Jpn. 79 073708(1-4) (2010) 210. Markus Aichhorn, Silke Biermann, Takashi Miyake, Antoine Georges, Masatoshi Imada Theoretical evidence for strong correlations and incoherent metallic state in FeSe Phys. Rev. B 82 064504(1-5) (2010) 211. Hiroshi Shinaoka and Masatoshi Imada Electronic and Magnetic Properties of Metallic Phases under Coexisting Short-Range Interaction and Diagonal Disorder J. Phys. Soc. Jpn. 79 094711(1-3) (2010) 212. Shiro Sakai, Yukitoshi Motome, Masatoshi Imada Doped high- T c cuprate superconductors elucidated in the light of zeros and poles of electronic Green's function Phys. Rev. B 82 134505(1-16) (2010) 213.  Masatoshi Imada, Takashi Miyake Electronic Structure Calculation by First Principles for Strongly Correlated Electron Systems J. Phys. Soc. Jpn. 79 112001(1-42) (2010) 214. Kazuma Nakamura, Yoshihide Yoshimoto, Y. Nohara, Masatoshi Imada. Ab initio Low-Dimensional Physics Opened Up by Dimensional Downfolding: Application to LaFeAsO J. Phys. Soc. Jpn. 79 123708(1-4) (2010) 215. Takahiro Misawa, Kazuma Nakamura, Masatoshi Imada Magnetic Properties of ab initioModel for Iron-Based Superconductors LaFeAsO J. Phys. Soc. Jpn. 80 023704(1-4) (2011) 216. Youhei Yamaji and Masatoshi Imada Composite-Fermion Theory for Pseudogap, Fermi Arc, Hole Pocket, and Non-Fermi Liquid of Underdoped Cuprate Superconductors Phys. Rev. Lett. 106 016404(1-4) (2011) 217. Moyuru Kurita, Youhei Yamaji and Masatoshi Imada. Topological Insulators from Spontaneous Symmetry Breaking Induced by Electron Correlation on Pyrochlore Lattices J. Phys. Soc. Jpn. 80 044708(1-7) (2011) 218.  Youhei Yamaji and Masatoshi Imada Mott physics on helical edges of two-dimensional topological insulators Phys. Rev. B ? 83 205122 (2011) 219.  Youhei Yamaji and Masatoshi Imada Composite fermion theory for pseudogap phenomena and superconductivity in underdoped cuprate superconductors Phys. Rev. B 83 214522(1-25) (2011) 220. Masatoshi Imada, Youhei Yamaji, Shiro Sakai and Yukitoshi Motome Theory of pseudogap and superconductivity in doped Mott insulators Annalen Der Phys. 523 629-637 (2011) 221. Shiro Sakai, Giorgio Sangiovanni, Marcello Civelli, Yukitoshi Motome, Karsten Held, Masatoshi Cluster-size dependence in cellular dynamical mean-field theory Phys. Rev. B 85 035102(1-10) (2012) 222. Hiroshi Shinaoka, Takahiro Misawa, Kazuma Nakamura, Masatoshi Imada Mott Transition and Phase Diagram of κ -(BEDT-TTF) 2 Cu(NCS) 2 Studied by Two-Dimensional Model Derived from ab initio Method
J. Phys. Soc. Jpn. 81 034701(1-12) (2012) 223. Ryotaro Arita, Jan Kunes, Anton V. Kozhevnikov, Adolfo G. Eguiluz, Masatoshi Imada Ab initio Studies on the Interplay between Spin-Orbit Interaction and Coulomb Correlation in Sr 2 IrO 4 and Ba 2 IrO 4 Phys. Rev. Lett. 108 086403(1-5) (2012) 224. Takahiro Misawa, Kazuma Nakamura and Masatoshi Imada. Ab initio Evidence for Strong Correlation Associated with Mott Proximity in Iron-Based Super- Phys. Rev. Lett 108 177007(1-5) (2012) 225.  Yuto Ito, Youhei Yamaji and Masatoshi Imada Stability of Unconventional Superconductivity on Surfaces of Topological Insulators J. Phys. Soc. Jpn. 80 063704 (2012) 226. Yusuke Nomura, Merzuk Kaltak, Kazuma Nakamura, Ciro Taranto, Shiro Sakai, Alessandro Toschi, Ryotaro Arita, Karsten Held, Georg Kresse and Masatoshi Imada Effective on-site interaction for dynamical mean-field theory Phys. Rev. B 86 085117(1-8) (2012) 227. Motoaki Hirayama, Takashi Miyake and Masatoshi Imada Ab initio Low-Energy Model of Transition-Metal-Oxide Heterostructure LaAlO 3 /SrTiO 3 J. Phys. Soc. Jpn. 81 084708(1-9) (2012) 228.  Yuto Ito, Youhei Yamaji and Masatoshi Imada. Impurity Effects on Superconductivity on Surfaces of Topological Insulators J. Phys. Soc. Jpn. 81 084707(1-14) (2012) 229. Ryosuke Akashi, Kazuma Nakamura, Ryotaro Arita and Masatoshi Imada High-temperature superconductivity in layered nitrides β -Li x MNCl (M = Ti, Zr, Hf): Insights from density functional theory for superconductors Phys. Rev. B 86 054513(1-16) (2012) 230. Kazuma Nakamura, Yoshihide, Yoshimoto, Masatoshi, Imada Ab initio two-dimensional multiband low-energy models of EtMe 3 Sb[Pd(dmit) 2 ] 2 and κ -(BEDT- TTF)2Cu(NCS)2 with comparisons to single-band models Phys. Rev. B 86 205117(1-9) (2012) 231. Shiro Sakai, Sebastien Blanc, Marcello Civelli, Yann Gallais, Maximilien Cazayous, Marie-Aude Measson, Jinsheng Wen, Zhijun Xu, Genda Gu, Giorgio Sangiovanni, Yukitoshi Motome, Karsten Held, Alain Sacuto, Antoine Georges and Masatoshi Imada. Raman-scattering measurements and theory of the energy-momentum spectrum for underdoped Bi2Sr2CaCuO 8+8 superconductors: Evidence of an s-wave structure for the pseudogap Phys. Rev. Lett. 111 107001(1-5) (2013) 232. Qing Li, Guixin Cao, Satoshi Okamoto, Jieyu Yi, Wenzhi Lin, Brian C. Sales, Jiaqiang Yan, Ryotaro Arita, Jan Kunes, Anton V. Kozhevnikov, Adolfo G. Eguiluz, Masatoshi Imada, Zheng Gai, Minghu Pan, David G. Mandrus Atomically resolved spectroscopic study of Sr 2 IrO 4 : Experiment and theory Sci. Rep. 3 3073(1-7) (2013) 233. Robert Achleitner, Hans Gerd Evertz, Masatoshi Imada, Ralf Gamillscheg, Peter Mohn Quantum Monte Carlo Simulations for Stacked Spin-Ladder Systems Containing Low Concentra- tions of Nonmagnetic Impurities:  Application to the Low-Temperature Broadening of NMR Spectra in SrCu2O3 Phys. Rev. B 88 214422(1-10) (2013) 234. Motoaki Hirayama, Takashi Miyake and Masatoshi Imada Derivation of Static Low-Energy Effective Models by ab initio Downfolding Method without Double Counting of Coulomb Correlations: Application to SrVO3, FeSe and FeTe Phys. Rev. B 87 195144(1-22) (2013) 235. Moyuru Kurita, Youhei Yamaji and Masatoshi Imada. Phase diagram structure of topological Mott transition for zero-gap semiconductors beyond con- ventional Landau-Ginzburg-Wilson scenario Phys. Rev. B 88 115143(1-21) (2013) 236.  Ryui Kaneko, Satoshi Morita, Masatoshi Imada Improved Multi-Variable Variational Monte Carlo Method Examined by High-Precision Calcula- tions of One-Dimensional Hubbard Model
J. Phys. Conf. Ser. 454 012046(1-9) (2013) 237. Masatoshi Imada, Shiro Sakai, Youhei Yamaji and Yukitoshi Motome Theory of Pseudogap in Underdoped Cuprates J. Phys. Conf. Ser. 449 012005(1-10) (2013) 238. Ryui Kaneko, Satoshi Morita, Masatoshi Imada Gapless Spin-Liquid Phase in an Extended Spin 1/2 Triangular Heisenberg Model J. Phys. Soc. Jpn. 83 093707(1-4) (2014) 239. Yasuhiro Yamada and Masatoshi Imada Universal departure from Johnson-Nyquist relation caused by limited resolution Phys. Rev. B 89 205421(1-9) (2014) 240.  Youhei Yamaji, Masatoshi Imada Metallic Interface Emerging at Magnetic Domain Wall of Antiferromagnetic Insulator: Fate of Extinct Weyl Electrons Phys. Rev. X 4 021035(1-27) (2014) 241. Takahiro Ohgoe, Masatoshi Imada Variational Monte Carlo Method for Electron-Phonon Coupled Systems Phys. Rev. B 89 195139(1-10) (2014) 242.  Masatoshi Imada, Youhei Yamaji, Moyuru Kurita Electron Correlation Effects on Topological Phases J. Phys. Soc. Jpn. 83 061017(1-9) (2014) 243. Youhei Yamaji, Yusuke Nomura, Moyuru Kurita, Ryotaro Arita, Masatoshi Imada First-Principles Study of the Honeycomb-Lattice Iridates Na2IrO3 in the Presence of Strong Spin- Orbit Interaction and Electron Correlations
Phys. Rev. Lett. 113 107201(1-5) (2014) 244. Takahiro Misawa, Masatoshi Imada Origin of high-T c superconductivity in doped Hubbard models and their extensions: Roles of uniform charge fluctuations Phys. Rev. B 90 115137(1-16) (2014) 245. Takahiro Misawa, Masatoshi Imada Superconductivity and its mechanism in an ab initio model for electron Nat. Commun. 5 5738(1-11) (2014) 246. Moyuru Kurita, Youhei Yamaji, Satoshi Morita and Masatoshi Imada. Variational Monte Carlo method in the presence of spin-orbit interaction and its application to Kitaev and Kitaev-Heisenberg models Phys. Rev. B 92 035122(1-13) (2015) 247. Motoaki Hirayama, Takahiro Misawa, Takashi Miyake, Masatoshi Imada Ab initio Studies of Magnetism in the Iron Chalcogenides FeTe and FeSe J. Phys. Soc. Jpn. 84 093703(1-5) (2015) 248. Shiro Sakai, Marcello Civelli, Yusuke Nomura and Masatoshi Imada Hidden fermionic excitation in the superconductivity of the strongly attractive Hubbard model Phys. Rev. B 92 180503(1-7) (2015) 249. Yasuhiro Yamada, Youhei Yamaji and Masatoshi Imada Exciton Lifetime Paradoxically Enhanced by Dissipation and Decoherence:  Toward Efficient Energy Conversion of a Solar Cell Phys. Rev. Lett. 115 197701(1-6) (2015) 250.  Kota Ido, Takahiro Ohgoe and Masatoshi Imada Time-dependent many-variable variational Monte Carlo method for nonequilibrium strongly cor- related electron systems Phys. Rev. B 92 245106(1-11) (2015) 251. Satoshi Morita, Ryui Kaneko, Masatoshi Imada Quantum Spin Liquid in Spin 1/2 J 1 -J 2 Heisenberg Model on Square Lattice: Many-Variable Variational Monte Carlo Study Combined with Quantum-Number Projections J. Phys. Soc. Jpn. 84 024720(1-11) (2016) 252. Shiro Sakai, Marcello Civelli and Masatoshi Imada Hidden Fermionic Excitation Boosting High-Temperature Superconductivity in Cuprates Phys. Rev. Lett. 116 057003(1-6) (2016) 253.  Hui-Hai Zhao, Zhi-Yuan Xie, Tao Xiang and Masatoshi Imada Tensor network algorithm by coarse-graining tensor renormalization on finite periodic lattices Phys. Rev. B 93 125115(1-14) (2016) 254. Kensaku Takai, Kota Ido, Takahiro Misawa, Youhei Yamaji and Masatoshi Imada Finite-Temperature Variational Monte Carlo Method for Strongly Correlated Electron Systems J. Phys. Soc. Jpn. 85 034601(1-10) (2016) 255.  Dai Kubota, Shiro Sakai and Masatoshi Imada. Real-space renormalized dynamical mean field theory Phys. Rev. B 93 205119(1-11) (2016) 256.  Youhei Yamaji, Masatoshi Imada Modulated helical metals at magnetic domain walls of pyrochlore iridium oxides Phys. Rev. B 93 195146 (2016) 257.  Youhei Yamaji, Takafumi Suzuki, Takuto Yamada, Sei-ichiro Suga, Naoki Kawashima, Masatoshi Imada Clues and criteria for designing a Kitaev spin liquid revealed by thermal and spin excitations of the honeycomb iridate Na2IrO3 Phys. Rev. B 93 174425(1-14) (2016) 258. Takahiro Misawa, Yusuke Nomura, Silke Biermann, Masatoshi Imada. Self-optimized superconductivity attainable by interlayer phase separation at cuprate interfaces Sci. Adv. 2 e1600664(1-7) (2016) 259.  Benjamin A. Frandsen, Lian Liu, Sky C. Cheung, Zurab Guguchia, Rustem Khasanov, Elvezio Morenzoni, Timothy J. S. Munsie, Alannah M. Hallas, Murray N. Wilson, Yipeng Cai, Graeme M. Luke, Bijuan Chen, Wenmin Li, Changqing Jin, Cui Ding, Shengli Guo, Fanlong Ning, Takashi U. Ito, Wararu Higemoto, Simon J. L. Billinge, Shoya Sakamoto, Atsushi Fujimori, Taito Murakami, Hiroshi Kageyama, Jose Antonio Alonso, Gabriel Kotliar, Masatoshi Imada, Yasutomo J. Uemura Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning Nat. Commun. 7 12519(1-11) (2016) 260. Shiro Sakai, Marcello Civelli and Masatoshi Imada Hidden-fermion representation of self-energy in pseudogap and superconducting states of the two- dimensional Hubbard model
Phys. Rev. B 94 115130(1-14) (2016) 261. Youhei Yamaji, Masatoshi Imada Nonequilibrium Pump-Probe Photoexcitation as a Tool for Analyzing Unoccupied Equilibrium States of Correlated Electrons J. Phys. Soc. Jpn. 85 094707(1-9). (2016) 262. Moyuru Kurita, Youhei Yamaji and Masatoshi Imada Stabilization of topological insulator emerging from electron correlations on honeycomb lattice and its possible relevance in twisted bilayer graphene Phys. Rev. B 94 125131(1-9) (2016) 263.  Hui-Hai Zhao, Kota Ido, Satoshi Morita and Masatoshi Imada Variational Monte Carlo method for fermionic models combined with tensor networks and appli- cations to the hole-doped two-dimensional Hubbard model Phys. Rev. B 96 085103(1-16) (2017) 264. Motoaki Hirayama, Takashi Miyake, Masatoshi Imada and Silke Biermann Low-energy effective Hamiltonians for correlated electron systems beyond density functional theory Phys. Rev. B 96 075102(1-20) (2017) 265.  Kota Ido, Takahiro Ohgoe, Masatoshi Imada Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation Sci. Adv. 3 e1700718(1-6) (2017) 266. Tsuyoshi Okubo, Kazuya Shinjo, Youhei Yamaji, Naoki Kawashima, Shigetoshi Sota, Takami Tohyama and Masatoshi Imada Ground state properties of Na 2 IrO 3 determined from ab initio Hamiltonian and its extensions containing Kitaev and extended Heisenberg interactions Phys. Rev. B 96 054434(1-13) (2017) 267. Takahiro Ohgoe, Masatoshi Imada Competition among Superconducting, Antiferromagnetic, and Charge Orders with Intervention by Phase Separation in the 2D Holstein-Hubbard Model Phys. Rev. Lett. 119 197001(1-11) (2017) 268.  Yusuke Nomura, Andrew S. Darmawan, Youhei Yamaji and Masatoshi Imada Restricted Boltzmann machine learning for solving strongly correlated quantum systems Phys. Rev. B 96 205152(1-9) (2017) 269.  Kota Ido, Takahiro Ohgoe, Masatoshi Imada Competition among various charge-inhomogeneous states and d -wave superconducting state in Hubbard models on square lattices Phys. Rev. B 97 045138(1-9) (2018) 270. Motoaki Hirayama, Youhei Yamaji, Takahiro Misawa and Masatoshi Imada Ab initio effective Hamiltonians for cuprate superconductors Phys. Rev. B 98 134501(1-19) (2018) 271. Shiro Sakai, Marcello Civelli and Masatoshi Imada. Direct connection between Mott insulators and d-wave high-temperature superconductors revealed by continuous evolution of self-energy poles Phys. Rev. B 98 195109(1-14) (2018) 272. Andrew S. Darmawan, Yusuke Nomura, Youhei Yamaji and Masatoshi Imada Stripe and superconducting order competing in the Hubbard model on a square lattice studied by a combined variational Monte Carlo and tensor network method Phys. Rev. B 98 205132(1-11) (2018) 273. Giuseppe Carleo, Yusuke Nomura and Masatoshi Imada. Constructing exact representations of quantum many-body systems with deep neural networks Nat. Commun. 9 5322 (2018) 274. Keiko Takahashi, Koji Goto, Ryo Onishi and Masatoshi Imada Large-scale intermittency and rare events boosted at dimensional crossover in anisotropic turbu- lence Phys. Rev. Fluids 3 124607(1-17) (2018) 275. Takahiro Misawa, Satoshi Morita, Kazuyoshi Yoshimi, Mitsuaki Kawamura, Yuichi Motoyama, Kota Ido, Takahiro Ohgoe, Masatoshi Imada and Takeo Kato – Open-source software for many-variable variational Monte Carlo method mVMC — Comput. Phys. Commun. 235 447-462 (2019) 276.  Masatoshi Imada and Takafumi J. Suzuki Excitons and Dark Fermions as Origins of Mott Gap, Pseudogap and Superconductivity in Cuprate Superconductors — General Concept and Basic Formalism Based on Gap Physics J. Phys. Soc. Jpn. 88 024701(1-13) (2019) 277. Terumasa Tadano, Yusuke Nomura, Masatoshi Imadan Ab initio derivation of an effective Hamiltonian for the La 2 CuO 4 /La 1.55Sr 0.45CuO 4 heterostructure Phys. Rev. B 99 155148(1-12) (2019) 278. Motoaki Hirayama, Takahiro Misawa, Takahiro Ohgoe, Youhei Yamaji, Masatoshi Imada Effective Hamiltonian for cuprate superconductors derived from multiscale ab initio scheme with level renormalization Phys. Rev. B 99 245155(1-21) (2019) 279. Takahiro Ohgoe, Motoaki Hirayama, Takahiro Misawa, Kota Ido, Youhei Yamaji, Masatoshi Imada
 Ab initio study of superconductivity and inhomogeneity in a Hg-based cuprate superconductor Phys. Rev. B 101 045124(1-11) (2020) 280. Kota Ido, Masatoshi Imada, Takahiro Misawa, Charge dynamics of correlated electrons:  Variational description with inclusion of composite fermions Phys. Rev. B 101 075124(1-13) (2020) 281. Maxime Charlebois and Masatoshi Imada Single-Particle Spectral Function Formulated and Calculated by Variational Monte Carlo Method with Application to d -Wave Superconducting State Phys. Rev. X 10 041023(1-14) (2020)