bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cochlear nerve deficiency in SOX11‐related Coffin‐Siris syndrome
Authors: Alburaiky Salam , Taylor Juliet , O'Grady Gina , Thomson Glen , Perry David , England Eleina M. , Yap Patrick 
Published: June 2022

AbstractThe phenotypic spectrum of SOX11‐related Coffin‐Siris syndrome (CSS) is expanding with reports of new associations. SOX11 is implicated in neurogenesis and inner ear development. Cochlear nerve deficiency, absence or hypoplasia, is commonly associated with cochlear canal stenosis or with CHARGE syndrome, a monogenic condition that affects inner ear development. SOX11 is a transcription factor essential for neuronal identity, highly correlated with the expression of CHD7, which regulates SOX11. We present two unrelated probands, each with novel de novo SOX11 likely pathogenic variants and phenotypic manifestations of CSS including global developmental delay, growth deficiency, and hypoplastic nails. They have unilateral sensorineural hearing loss due to cochlear nerve deficiency confirmed on MRI. SOX11 is implicated in sensory neuron survival and maturation. It is highly expressed in the developing inner ear. Homozygous ablation of SOX11 in a mouse model resulted in a reduction in sensory neuron survival and decreased axonal growth. A heterozygous knockout mice model had hearing impairment with grossly normal inner ear structures like the two probands reported. We propose cochlear nerve deficiency as a new phenotypic feature of SOX11‐related CSS. Magnetic resonance imaging is useful in delineating the cochlear nerve deficiency and other CSS‐related brain malformations.
A Metal‐free Access to HinderedN‐Alkyl Sulfoximines via In‐Situ Generated Aza‐Oxyallyl Cations from Functionalized Alkyl Bromide
Authors: More Satish G. , Mane Kishor D. , Suryavanshi Gurunath 
Published: June 2022

AbstractHerein, we report a catalyst‐free and mild synthetic method for the construction of hinderedN‐alkyl sulfoximines derivative. A wide range of hindered di‐alkyl sulfoximines can be readily obtained from the reaction ofα‐bromo‐hydroxamates with a variety of sulfoximines, including diaryl, aryl‐alkyl, di‐alkyl and heteroaryl sulfoximines.
Exact solutions to the time‐dependent supersymmetric Jaynes‐Cummings model and the Chiao‐Wu model
Authors: Shen J.‐Q. , Zhu H.Y. 
Published: June 2022

AbstractThe present paper obtains the exact solutions to the time‐dependent supersymmetric two‐level multiphoton Jaynes‐Cummings model and the Chiao‐Wu model that describes the propagation of a photon inside an optical fiber. On the basis of the fact that the two‐level multiphoton Jaynes‐Cummings model possesses a supersymmetric structure, an invariant is constructed in terms of the supersymmetric generators by working in the sub‐Hilbert‐space corresponding to a particular eigenvalue of the conserved supersymmetric generators (i.e., the time‐independent invariant). By constructing the effective Hamiltonian that describes the interaction of the photon with the medium of the optical fiber, it is further verified that the particular solution to the Schrödinger equation is the eigenfunction of the second‐quantized momentum operator of photons field. This, therefore, means that the explicit expression (rather than the hidden form that involves the chronological product) for the time‐evolution operator of wave function is obtained by means of the invariant theories.
Weakly nonlocal irreversible thermodynamics
Authors: Ván P. 
Published: June 2022

AbstractWeakly nonlocal thermodynamic theories are critically revisited. A relocalized, irreversible thermodynamic theory of nonlocal phenomena is given, based on a modified form of the entropy current and new kind of internal variables, the so called current multipliers. The treatment is restricted to deal with nonlocality connected to dynamic thermodynamic variables. Several classical equations are derived, including Guyer‐Krumhansl, Ginzburg‐Landau and Cahn‐Hilliard type equations.
FRW minisuperspace with local N=4 supersymmetry and self‐interacting scalar field
Authors: Vargas Moniz P. 
Published: June 2022

AbstractA supersymmetric FRW model with a scalar supermultiplet and generic superpotential is analysed from a quantum cosmological perspective. The corresponding Lorentz and supersymmetry constraints allow to establish a system of first order partial differential equations from which solutions can be obtained. We show that this is possible when the superpotential is expanded in powers of a parameter λ≪1. At order λ0 we find the general class of solutions, which include in particular quantum states reported in the current literature. New solutions are partially obtained at order λ1, where the dependence on the superpotential is manifest. These classes of solutions can be employed to find states for higher orders in λ. Our analysis further points to the following: (i) supersymmetric wave functions can only be found when the superpotential has either an exponential behaviour, an effective cosmological constant form or is zero; (ii) If the superpotential behaves differently during other periods, the wave function is trivial ( = 0, i.e., no supersymmetric states). We conclude this paper discussing how our FRW minisuperspace (with N = 4 supersymmetry and invariance under time‐reparametrization) can be relevant concerning the issue of supersymmetry breaking.
Spectral composition of electromagnetic fluctuations induced by a lossy layered system
Authors: Dorofeyev I. , Jersch J. , Fuchs H. 
Published: June 2022

AbstractWe calculate the spectral characteristics of fluctuating electromagnetic fields generated by a half‐space covered with a film of an arbitrary thickness. Materials of the half‐space and the film are described by different complex permittivities. Expressions for spectral power densities of fluctuating fields and all spatial derivatives expressed via Fresnel coefficients for “p” and “s” waves are derived. Various limiting cases for propagating and evanescent waves in cases of different film thickness are considered. Possible contributions to spectral power densities from interface excitations and wave‐guide modes are discussed by analyzing the Fresnel factors in the expressions. Using the results for spatial derivatives a closed analytical expression for a multipolar force acting on a small particle near a half‐space is found for multipoles of all orders. The case for a dipole interaction follows directly from a general solution.
Quasiclassical theory of charge transport in disordered interacting electron systems
Authors: Schwab P. , Raimondi R. 
Published: June 2022

AbstractWe consider the corrections to the Boltzmann theory of electrical transport arising from the Coulomb interaction in disordered conductors. In this article the theory is formulated in terms of quasiclassical Green's functions. We demonstrate that the formalism is equivalent to the conventional diagrammatic technique by deriving the well‐known Altshuler‐Aronov corrections to the conductivity. Compared to the conventional approach, the quasiclassical theory has the advantage of being closer to the Boltzmann theory, and also allows description of interaction effects in the transport across interfaces, as well as non‐equilibrium phenomena in the same theoretical framework. As an example, by applying the Zaitsev boundary conditions which were originally developed for superconductors, we obtain the P(E)‐theory of the Coulomb blockade in tunnel junctions. Furthermore we summarize recent results obtained for the non‐equilibrium transport in thin films, wires and fully coherent conductors.
On explicit solutions to the stationary axisymmetric Einstein‐Maxwell equations describing dust disks
Authors: Klein C. 
Published: June 2022

AbstractWe review explicit solutions to the stationary axisymmetric Einstein‐Maxwell equations which can be interpreted as disks of charged dust. The disks of finite or infinite extension are infinitesimally thin and constitute a surface layer at the boundary of an electro‐vacuum. The Einstein‐Maxwell equations in the presence of one Killing vector are obtained by using a projection formalism. This leads to equations for three‐dimensional gravity where the matter is given by a SU(2,1)/S[U(1,1)× U(1)] nonlinear sigma model. The SU(2,1) invariance of the stationary Einstein‐Maxwell equations can be used to construct solutions for the electro‐vacuum from solutions to the pure vacuum case via a so‐called Harrison transformation. It is shown that the corresponding solutions will always have a non‐vanishing total charge and a gyromagnetic ratio of 2. Since the vacuum and the electro‐vacuum equations in the stationary axisymmetric case are completely integrable, large classes of solutions can be constructed with techniques from the theory of solitons. The richest class of physically interesting solutions to the pure vacuum case due to Korotkin is given in terms of hyperelliptic theta functions. Harrison transformed hyperelliptic solutions are discussed. As a concrete example we study the transformation of a family of counter‐rotating dust disks. To obtain algebro‐geometric solutions with vanishing total charge which are of astrophysical relevance, three‐sheeted surfaces have to be considered. The matter in the disk is discussed following Bičák et al. We review the ‘cut and glue’ technique where a strip is removed from an explicitly known spacetime and where the remainder is glued together after displacement. The discontinuities of the normal derivatives of the metric at the glueing hypersurface lead to infinite disks. If the energy conditions are satisfied and if the pressure is positive, the disks can be interpreted in the vacuum case as made up of two components of counter‐rotating dust moving on geodesics. In electro‐vacuum the condition of geodesic movement is replaced by electro‐geodesic movement. As an example we discuss a class of Harrison‐transformed hyperelliptic solutions. The range of parameters is identified where an interpretation of the matter in the disk in terms of electro‐dust can be given.
Weakly interacting electrons and the renormalization group
Authors: Binz B. , Baeriswyl D. , Douçot B. 
Published: June 2022

AbstractWe present a general method to study weak‐coupling instabilities of a large class of interacting electron models in a controlled and unbiased way. Quite generally, the electron gas is unstable towards a superconducting state even in the absence of phonons, since high‐energy spin fluctuations create an effective attraction between the quasi‐particles. As an example, we show the occurrence of d‐wave pairing in the repulsive Hubbard model in two dimensions. In one dimension or if the Fermi surface is nested, there are several competing instabilities. The required renormalization group formalism for this case is presented to lowest (one‐loop) order on a most elementary level, connecting the idea of the “parquet summation” to the more modern concept of Wilson's effective action. The validity and restrictions of the one‐loop approximation are discussed in detail. As a result, three different renormalization group approaches known in the literature are shown to be equivalent within the regime of applicability. We also briefly discuss the open problem of a two‐dimensional Fermi system at Van Hove filling without nesting.
Vorticity and the Nernst effect in cuprate superconductors
Authors: Ong N.P. , Wang Y. , Ono S. , Ando Y. , Uchida S. 
Published: June 2022

AbstractWe present a review of the vortex‐Nernst effect in the 3 cuprate families La2‐xSrxCuO4, Bi2Sr2CaCu2O8, and YBa2Cu3Oy, and discuss the scenario that the superconducting transition in the hole‐doped cuprates corresponds to the destruction of long‐range phase coherence rather than the vanishing of the order‐parameter amplitude.
Metal oxide gate electrodes for advanced CMOS technology
Authors: Fröhlich K. , Hušeková K. , Oszi Z. , Hooker J.C. , Fanciulli M. , Wiemer C. , Dimoulas A. , Vellianitis G. , Roozeboom F. 
Published: June 2022

AbstractWe have prepared RuO2 and SrRuO3 thin films for application as gate electrodes in CMOS technology. RuO2 and SrRuO3 films exhibit satisfactory stability in oxygen atmosphere at elevated temperatures. RuO2 films decompose in reducing atmosphere. Extracted work function values for RuO2 electrode are around 5.1 eV, confirming that RuO2 is a suitable candidate for pMOS gate electrode application.
Pulsed laser deposition of Fe‐ and Fe, Cu‐doped ZnO thin films
Authors: Guzmán E. , Hochmuth H. , Lorenz M. , von Wenckstern H. , Rahm A. , Kaidashev E.M. , Ziese M. , Setzer A. , Esquinazi P. , Pöppl A. , Spemann D. , Pickenhain R. , Schmidt H. , Grundmann M. 
Published: June 2022

AbstractFe‐ and Fe, Cu‐doped ZnO films have been grown on 10 × 10 mm2 c‐plane sapphire by pulsed laser deposition (PLD). The targets were prepared from ZnO, Fe2O3, and/or CuO powder. The structural, electrical and magnetical properties of thin films grown under different conditions have been investigated. As expected, the doped ZnO thin film properties depend sensitively on the dopant material.
Influence of the doping concentration of YBa2Cu3O7‐δ drain‐source channels on the properties of superconducting field‐effect devices
Authors: Logvenov G.Yu. , Sawa A. , Schneider C.W. , Mannhart J. 
Published: June 2022

AbstractSystematic electric‐field‐effect studies of the charge transport in doped YBa2Cu3O7‐δ films were conducted. The results verify that the superconducting properties of YBa2Cu3O7‐δ can be controlled by electric fields, as predicted by the generic phase diagram of the cuprates.
Superparamagnetism in Co ion‐implanted epitaxial anatase TiO2 thin films
Authors: Kim D.H. , Yang J.S. , Kim Y.S. , Chang Y.J. , Noh T.W. , Bu S.D. , Kim Y.‐W. , Park Y.D. , Pearton S.J. , Park J.‐H. 
Published: June 2022

AbstractWe investigated the magnetic properties of Co doped anatase TiO2 thin films. To incorporate Co into epitaxial anatase TiO2 thin films, we implanted them with Co+ ions. The temperature dependence of the magnetization of the implanted films, taken in zero‐field‐cooling (ZFC) and field‐cooling conditions, exhibits the main features of superparamagnetic system: the ZFC curves are rounded at the blocking temperature (TB) and a paramagnetic‐like behavior above TB. After annealing the films, TB increased with increasing annealing temperature. These phenomena can be explained by the formation of Co (or ferromagnetic Co compound) particles and their growth during annealing, as directly observed with transmission electron microscopy.
Domain wall creep in mixed c‐a axis Pb(Zr0.2Ti0.8)O3 thin films
Authors: Paruch P. , Giamarchi T. , Triscone J.‐M. 
Published: June 2022

AbstractCreep motion of ferroelectric domain walls in epitaxial Pb(Zr0.2Ti0.8)O3 thin films was studied by atomic force microscopy. The dynamical exponent μ was found to be smaller than in previous reports, with values significantly lower than 1 observed in samples with a‐axis inclusions.
The 2‐matrix of the spin‐polarized electron gas: contraction sum rules and spectral resolutions
Authors: Ziesche P. , Tasnádi F. 
Published: June 2022

AbstractThe spin‐polarized homogeneous electron gas with densities ρ↑ and ρ↓ for electrons with spin ‘up’ (↑) and spin ‘down’ (↓), respectively, is systematically analyzed with respect to its lowest‐order reduced densities and density matrices and their mutual relations. The three 2‐body reduced density matrices γ↑↑, γ↓↓, γa are 4‐point functions for electron pairs with spins ↑↑, ↓↓, and antiparallel, respectively. From them, three functions G↑↑(x,y), G↓↓(x,y), Ga(x,y), depending on only two variables, are derived. These functions contain not only the pair densities according to g↑↑(r) = G↑uarr;(0,r), g↓↓(r) = G↓↓(0,r), ga(r) = Ga(0,r) with r = |r1 ‐ r2|, but also the 1‐body reduced density matrices γ↑ and γ↓ being 2‐point functions according to γs = ρsfs and fs(r) = Gss(r, ∞) with s = ↑,↓ and r = |r1 ‐ r′1|. The contraction properties of the 2‐body reduced density matrices lead to three sum rules to be obeyed by the three key functions Gss, Ga. These contraction sum rules contain corresponding normalization sum rules as special cases. The momentum distributions n↑(k) and n↓(k), following from f↑(r) and f↓(r) by Fourier transform, are correctly normalized through fs(0) = 1. In addition to the non‐negativity conditions ns(k),gss(r),ga(r) ≥ 0 [these quantities are probabilities], it holds ns(k) ≤ 1 and gss(0) = 0 due to the Pauli principle and ga(0) ≤ 1 due to the Coulomb repulsion. Recent parametrizations of the pair densities of the spin‐unpolarized homogeneous electron gas in terms of 2‐body wave functions (geminals) and corresponding occupancies are generalized (i) to the spin‐polarized case and (ii) to the 2‐body reduced density matrix giving thus its spectral resolutions.
Unconventional superconductivity and magnetism in Sr2RuO4 and related materials
Authors: Eremin I. , Manske D. , Ovchinnikov S.G. , Annett J.F. 
Published: June 2022

AbstractWe review the normal and superconducting state properties of the unconventional triplet superconductor Sr2RuO4 with an emphasis on the analysis of the magnetic susceptibility and the role played by strong electronic correlations. In particular, we show that the magnetic activity arises from the itinerant electrons in the Ru d‐orbitals and a strong magnetic anisotropy occurs (χ+‐ < χzz) due to spin‐orbit coupling. The latter results mainly from different values of the g‐factor for the transverse and longitudinal components of the spin susceptibility (i.e. the matrix elements differ). Most importantly, this anisotropy and the presence of incommensurate antiferromagnetic and ferromagnetic fluctuations have strong consequences for the symmetry of the superconducting order parameter. In particular, reviewing spin fluctuation‐induced Cooper‐pairing scenario in application to Sr2RuO4 we show how p‐wave Cooper‐pairing with line nodes between neighboring RuO2‐planes may occur. We also discuss the open issues in Sr2RuO4 like the influence of magnetic and non‐magnetic impurities on the superconducting and normal state of Sr2RuO4. It is clear that the physics of triplet superconductivity in Sr2RuO4 is still far from being understood completely and remains to be analyzed more in more detail. It is of interest to apply the theory also to superconductivity in heavy‐fermion systems exhibiting spin fluctuations.
Partitioning in multiconfiguration perturbation theory
Authors: Surján P.R. , Rolik Z. , Szabados Á. , Köhalmi D. 
Published: June 2022

AbstractA simple and effective formulation of multi‐configuration perturbation theory is reviewed emphasizing the various possibilities for partitioning the Hamiltonian. We study different principles how traditional partitionings (like that of Møller and Plesset or Epstein and Nesbet) can be generalized to the multi‐configurational case. Level shift parameters are introduced with the purpose of fine‐tuning the partitioning. Variational conditions for optimizing level shift parameters in multi‐configuration theory are investigated, both for N‐particle levels and for quasiparticle (one‐electron) energies.
Ordering of p‐n‐alkylbenzoic acids (nBAC) having four, five, and six alkyl chain carbon atoms – a computational analysis
Authors: Ojha D.P. 
Published: June 2022

AbstractA computational analysis of ordering in p‐n‐alkylbenzoic acids, having 4 (4BAC), 5 (5BAC), and 6 (6BAC) alkyl chain carbon atoms, has been carried out based on quantum mechanics and intermolecular forces. The evaluation of atomic charge and dipole moment at each atomic centre has been carried out through an all‐valance electron (CNDO/2) method. The modified Rayleigh‐Schrodinger perturbation theory along with multicentered‐multipole expansion method has been employed to evaluate long‐range intermolecular interactions while a ‘6‐exp’ potential function has been assumed for short‐range interactions. The total interaction energy values obtained through these computations were used to calculate the probability of each configuration at room temperature, nematic‐isotropic transition temperature and above transition temperature using the Maxwell‐Boltzmann formula. A comparative picture of molecular parameters like total energy, binding energy and total dipole moment has been given. A model has been developed to describe the nematogenicity of these acids in terms of their relative order with molecular parameter introduced in this article.
Selection between hexagonal, square and stripe patterns in a polarization instability: an experimental investigation
Authors: Aumann A. , Ackemann T. , Lange W. 
Published: June 2022

AbstractThe paper reports on experimental results on pattern selection in a nonlinear optical system based on a single‐mirror feedback‐scheme. Zeeman pumping in sodium vapor is utilized as optical nonlinearity. Above a certain power threshold the unstructured state with defined polarization becomes simultaneously unstable against a pattern forming and a polarization instability. In the resulting patterns the right‐ and left‐hand circular polarization components of the light field tend to separate in space. The pattern selection depends crucially on the polarization ellipticity of the input beam. Transitions between positive and negative hexagons via stripes or squares are observed. They are determined by the symmetry of the interaction between the spin of the light field and the atomic spin and are considered as experimental demonstrations of general principles of pattern formation.
Transverse pattern formation and its control in photorefractive optics
Authors: Denz C. , Jander Ph. , Schwab M. , Sandfuchs O. , Belić M. , Kaiser F. 
Published: June 2022

AbstractA wealth of periodic transverse patterns is observed in nonlinear optical, photorefractive single‐feedback systems. It is the extension of a photorefractive medium in the direction of propagation of the laser beam that allows for the formation of stable hexagons, squares, rhombuses and dodecagons above the first bifurcation of the system. In this article we review the formation of these periodic patterns and present linear and nonlinear stability analyses that predict the type of pattern to appear. Amplitude equations for the interactions of unstable sidebands are introduced. We compare numerical and experimental results on two‐dimensional transverse pattern formation. We present control methods for the invasive and non‐invasive manipulation of different pattern states using a Fourier filtering technique.
Quantum extended supersymmetries
Authors: Grigore D.R. , Scharf G. 
Published: June 2022

AbstractWe analyse some quantum multiplets associated with extended supersymmetries. We study in detail the general form of the causal (anti)commutation relations. The condition of positivity of the scalar product imposes severe restrictions on the (quantum) model. It is problematic if one can find out quantum extensions of the standard model with extended supersymmetries.
Unusual current‐voltage characteristics of single crystalline and bicrystalline La0.7Ca0.3MnO3 films
Authors: Sawa A. , Schneider C.W. , Mannhart J. 
Published: June 2022

AbstractThe current‐voltage characteristics of single crystalline and bicrystalline La0.7Ca0.3MnO3 films were measured and analyzed. Several epitaxial films, as well as 45° [001]‐tilt grain boundaries, display current‐voltage characteristics which are asymmetric with respect to polarity reversal of the bias current. One epitaxial film has a polarity dependent resistance of ∼340kΩ and of ∼670kΩ in forward and in reverse direction, respectively.
Baryons as Fock states of 3,5, … quarks *
Authors: Diakonov D. , Petrov V. 
Published: June 2022

AbstractWe present a generating functional producing quark wave functions of all Fock states in the octet, decuplet and antidecuplet baryons in the mean field approximation, both in the rest and infinite momentum frames. In particular, for the usual octet and decuplet baryons we get the SU(6)‐symmetric wave functions for their 3‐quark component but with specific corrections from relativism and from additional quark‐antiquark pairs. For the exotic antidecuplet baryons we obtain the 5‐quark wave function.