cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2510193
title: Observation of Berry curvature and chirality in Mn3Ge Weyl semimetal using polarized SANS

description: Antiferromagnetic (AFM) Weyl semimetals, such as Mn3Ge, are topological materials exhibiting anomalous transport properties, including the anomalous Hall effect (AHE), anomalous magneto-optic Kerr effect (MOKE), and anomalous Nernst effect, all driven by nonvanishing Berry curvature. Mn3Ge stands out for its noncollinear AFM structure in the a-b plane, which breaks time-reversal symmetry, resulting in a large Berry curvature. This Berry curvature, arising from broken time-reversal symmetry, acts like an intrinsic magnetic field, leading to real-space effects similar to ferromagnetic (FM) materials. Since neutrons also sense the Berry phase, we propose that small-angle neutron scattering (SANS) of AFM Weyl semimetals, such as Mn3Ge, will show field-dependent patterns akin to those observed in FM systems. This experiment could provide new insights into the interaction between neutrons and Berry phase. Moreover, when a small magnetic field (at least 20 mT) is applied in the x-y crystallographic plane, an imbalance of magnetic domains with specific (net) chirality is created, leading to nonzero Berry curvature and observable effects like AHE and MOKE. We anticipate that the net chirality of magnetic domains can be detected using polarized SANS (SANSPOL), revealing asymmetry in the SANS cross-section when the magnetic field is applied within the x-y plane. This experiment will enhance the understanding of Berry curvature and chiral magnetism in AFM systems.
DOI: 10.5286/isis.e.rb2590132-1
title: Determination of the ground state of new insulating Jeff=1/2 pyrochlore ruthenate In2Rh2O7
DOI: 10.21233/n34j62
title: Makar Inlet pollen surface sample dataset

description: Raw data for the Makar Inlet pollen surface sample dataset submitted to the Neotoma Paleoecology Database. Data is available through the landing page in JSON format. The landing page referenced by the DOI also contains links to publications and a map-based viewer for the dataset. The Neotoma Paleoecology Database maintains a homepage at https://www.neotomadb.org.
DOI: 10.3535/gc4-1vv-j4r
title: Ajuga reptans L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/v4j-4cz-4qq
title: Raphanus raphanistrum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.4121/4194033b-d45c-4f4d-884b-63f0c27b4a02
title: Dataset to the publication Fatigue crack propagation in functionally graded bi-material steel obtained through wire-arc additive manufacturing

description: Dataset to the publication Fatigue crack propagation in functionally graded bi-material steel obtained through wire-arc additive manufacturing. The dataset includes the data obtained from fatigue characterization and post-mortem analysis of the specimens tested from a bi-metal additively-manufactured parent specimen. The dataset includes:ABAQUS FEM analysis results, including CAE model data with mesh, supports, loads and assembly conditionsElectron back-scatter diffraction (EBSD) data, including crystallographic maps and project datasets, as well as MTEX matlab code used to identify martensite variants from Focused Ion Beam-milled specimens examined under Transmission Kikuchi Diffraction (TKD). Fatigue crack growth rate measurements, obtained from sub-size SENB specimens under constant force, constant \Delta K, and under load sheading schemes to obtain K_TH values.
DOI: 10.5286/isis.e.rb2420024
title: Investigate the effective model in a Kitaev candidate material

description: Recently, magnetic systems with significant anisotropic properties have garnered considerable interest. The renowned S = 1/2 Kitaev model proposes a route to achieve the quantum spin liquid ground state and unique anyonic excitations through bond-dependent anisotropy. Thus, studying and realizing this model is important for exploring new quantum phases and advancing quantum computations. Recently, discussions on Kitaev physics have expanded to include the S=1 case, with predictions of reduced isotropic Heisenberg terms and the derivation of Kitaev terms from the strong SOC of ligand ions via super-exchange processes. These proposals potentially enrich the pool of Kitaev material candidates. NiI2, a van der Waals material, is a rare example of an S=1 magnet proposed to host Kitaev physics. Additionally, such systems with noncollinear magnetic structures and potential bond-dependent anisotropy contain rich physics, such as magnon decay and avoided decay due to strong magnon-magnon interactions. Furthermore, type-2 multiferroics near room temperature, along with magnetic control, make NiI2 a promising platform for creating faster and smaller memory devices. Investigations into the magnetic excitations of NiI2 are crucial to resolving these issues. Therefore, INS data is urgently required. We believe that research on NiI2 will significantly advance our understanding of the physics derived from the Kitaev models, particularly those involving higher spins.
DOI: 10.5286/isis.e.rb2510399
title: Keep following the charge: orbital reorganization across the time-reversal symmetry breaking transition in kagome superconductors

description: Kagome superconductors AV3Sb5 provides a unique platform for studying charge orders and unusual electronic properties, including potential time-reversal symmetry breaking and a low-temperature nematic transition. A key question is the nature of the intermediate state between charge density wave order (CDW) and superconductivity. In a previous experiment (2410449) we have used avoided level crossing muSR to analyze how electronic charges reorganize in RbV3Sb5 as a function of the temperature. Our results have shown a clear a rearrangement of charge density below T ∼ 40 K, indicating a transition in the charge channel, likely electronic in origin, well below the CDW. Here we want to extend the analysis to the other two compounds of the family: KV3Sb5 and CsV3Sb5.
DOI: 10.5286/isis.e.rb2510399-1
title: Keep following the charge: orbital reorganization across the time-reversal symmetry breaking transition in kagome superconductors

description: Kagome superconductors AV3Sb5 provides a unique platform for studying charge orders and unusual electronic properties, including potential time-reversal symmetry breaking and a low-temperature nematic transition. A key question is the nature of the intermediate state between charge density wave order (CDW) and superconductivity. In a previous experiment (2410449) we have used avoided level crossing muSR to analyze how electronic charges reorganize in RbV3Sb5 as a function of the temperature. Our results have shown a clear a rearrangement of charge density below T ∼ 40 K, indicating a transition in the charge channel, likely electronic in origin, well below the CDW. Here we want to extend the analysis to the other two compounds of the family: KV3Sb5 and CsV3Sb5.
DOI: 10.34816/ifao.archives.232955
title: SAQQARA_nb_1994_06020

description: Référence : nb_1994_06020<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/xn6-khy-ntl
title: Scleranthus annuus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zea-7rs-xzr
title: Anemone sylvestris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.4121/4194033b-d45c-4f4d-884b-63f0c27b4a02.v1
title: Dataset to the publication Fatigue crack propagation in functionally graded bi-material steel obtained through wire-arc additive manufacturing

description: Dataset to the publication Fatigue crack propagation in functionally graded bi-material steel obtained through wire-arc additive manufacturing. The dataset includes the data obtained from fatigue characterization and post-mortem analysis of the specimens tested from a bi-metal additively-manufactured parent specimen. The dataset includes:ABAQUS FEM analysis results, including CAE model data with mesh, supports, loads and assembly conditionsElectron back-scatter diffraction (EBSD) data, including crystallographic maps and project datasets, as well as MTEX matlab code used to identify martensite variants from Focused Ion Beam-milled specimens examined under Transmission Kikuchi Diffraction (TKD). Fatigue crack growth rate measurements, obtained from sub-size SENB specimens under constant force, constant \Delta K, and under load sheading schemes to obtain K_TH values.
DOI: 10.5286/isis.e.rb2420519-1
title: Investigating lipid and polymer exchange processes in protein-containing polymer-stabilised nanodiscs

description: Poly-Styrene-co-Maleic Acid Lipid Particles (SMALPs) are discoidal self-assembled nanoparticles containing a central lipid bilayer core stabilised by a radial amphipathic polymer belt, used to extract membrane proteins directly from host cell membranes complete with annular lipids. Recent studies from ourselves and others have shown that lipids and polymers within SMALPs rapidly exchange with other SMALPs in bulk solution, phospholipid monolayers, and phospholipid bilayers. Here, we propose to use neutron reflectometry, with selective deuteration and solution isotopic contrast variation to continue our study to specifically investigate the influence of the volume of the SMALP occupied by encapsulated proteins the rates and extents of exchange processes between SMALPs and lipid bilayers at the silicon-water interface. This information will be of great importance to fully utilise and expand the biotechnological potential of SMALPs.
DOI: 10.5286/isis.e.rb2455036
title: Secondary crystallisation in PVOH
DOI: 10.5286/isis.e.rb2455036-1
title: Secondary crystallisation in PVOH
DOI: 10.3535/gw3-9cd-sy1
title: Phaeoptilum spinosum Radlk.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/z7h-vz3-tfp
title: Viscaria vulgaris Röhl.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420519
title: Investigating lipid and polymer exchange processes in protein-containing polymer-stabilised nanodiscs

description: Poly-Styrene-co-Maleic Acid Lipid Particles (SMALPs) are discoidal self-assembled nanoparticles containing a central lipid bilayer core stabilised by a radial amphipathic polymer belt, used to extract membrane proteins directly from host cell membranes complete with annular lipids. Recent studies from ourselves and others have shown that lipids and polymers within SMALPs rapidly exchange with other SMALPs in bulk solution, phospholipid monolayers, and phospholipid bilayers. Here, we propose to use neutron reflectometry, with selective deuteration and solution isotopic contrast variation to continue our study to specifically investigate the influence of the volume of the SMALP occupied by encapsulated proteins the rates and extents of exchange processes between SMALPs and lipid bilayers at the silicon-water interface. This information will be of great importance to fully utilise and expand the biotechnological potential of SMALPs.
DOI: 10.5286/isis.e.rb2510741
title: Inelastic Neutron Scattering study of magnetic excitations in Triple Perovskites Ba3TRuIrO9 (T=Mg, Na and Zn)

description: 6H-perovskites with formula Ba3MAA´O9, which form in triple perovskite P63/mmc structure, display interesting magnetic properties on account of large spin-orbit coupling because of the shorter A-A´ distance in this structure. Ba3MgRuIrO9 and Ba3NaRuIrO9 with mixed 4d (Ru) and 5d (Ir) moments present an interesting magnetic behavior with competing localized and itinerant magnetism. The magnetic susceptibility measurements show a magnetic transition of complex nature in Ba3MgRuIrO9 near 17 K arising from the localized nature of Ir/Ru magnetic moments with an average valence state of 5, whereas the localized Ir/Ru leads to a magnetic phase transition near 88 K in Ba3NaRuIrO9 with an average valence state of 5.5. The magnetic measurements on both the compounds show the presence of short-range ferromagnetic and long-range antiferromagnetic correlations. Further investigations using the neutron scattering measurements are compulsory to understand the localized Ir/Ru magnetism in Ba3MgRuIrO9 and Ba3NaRuIrO9. We have perfomed MARI express (RB2490265) on Ba3TRuIrO9 (T=Mg and Na) and we see magnetic excitations near 5 meV at 5K. We therefore propose to carry out a detail inelastic neutron scattering experiment to probe the magnetic excitations in these compounds. We propose to carry inelastic neutron scattering measurements on Ba3MgRuIrO9 and Ba3NaRuIrO9 using the MARI spectrometer. We will also measure Ba3ZnRuIrO9 for comparison, which orders ferromagnetically below 70 K.
DOI: 10.5286/isis.e.rb2510741-1
title: Inelastic Neutron Scattering study of magnetic excitations in Triple Perovskites Ba3TRuIrO9 (T=Mg, Na and Zn)

description: 6H-perovskites with formula Ba3MAA´O9, which form in triple perovskite P63/mmc structure, display interesting magnetic properties on account of large spin-orbit coupling because of the shorter A-A´ distance in this structure. Ba3MgRuIrO9 and Ba3NaRuIrO9 with mixed 4d (Ru) and 5d (Ir) moments present an interesting magnetic behavior with competing localized and itinerant magnetism. The magnetic susceptibility measurements show a magnetic transition of complex nature in Ba3MgRuIrO9 near 17 K arising from the localized nature of Ir/Ru magnetic moments with an average valence state of 5, whereas the localized Ir/Ru leads to a magnetic phase transition near 88 K in Ba3NaRuIrO9 with an average valence state of 5.5. The magnetic measurements on both the compounds show the presence of short-range ferromagnetic and long-range antiferromagnetic correlations. Further investigations using the neutron scattering measurements are compulsory to understand the localized Ir/Ru magnetism in Ba3MgRuIrO9 and Ba3NaRuIrO9. We have perfomed MARI express (RB2490265) on Ba3TRuIrO9 (T=Mg and Na) and we see magnetic excitations near 5 meV at 5K. We therefore propose to carry out a detail inelastic neutron scattering experiment to probe the magnetic excitations in these compounds. We propose to carry inelastic neutron scattering measurements on Ba3MgRuIrO9 and Ba3NaRuIrO9 using the MARI spectrometer. We will also measure Ba3ZnRuIrO9 for comparison, which orders ferromagnetically below 70 K.
DOI: 10.34816/ifao.archives.232956
title: SAQQARA_nb_1994_06021

description: Référence : nb_1994_06021<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/sjx-3cm-4lv
title: Herniaria glabra L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410358-1
title: Determining the role of inversion symmetry in single crystals of the noncentro-symmetric superconductor La7Ir3 by µSR: A continuation

description: In superconductors, the inversion symmetry of the crystallographic structure plays a central role in the formation of the Cooper pairs. When inversion symmetry is broken, there is the possibility of a mixing of singlet-triplet pairing, leading to unconventional superconducting properties. At Warwick, we have successfully synthesized large, high-quality single crystals of noncentrosymmetric hexagonal superconductor La7Ir3. We now aim to investigate what the role of broken inversion symmetry has on the superconducting properties of La7Ir3 using these single crystals. This proposal forms a continuation of a previous experiment, RB1810665. We have now fully analysed the data collected from RB1810665 and have identified significant issues with the data that were collected. In this new proposal we wish to collect the data again for the [100] crystallographic direction in TF and work closely with the instrument scientists to ensure that we can avoid the issue of stray fields which were the source of the issues in the original data. This will allow us to complete our analysis and write up our results. Further to this, we would also aim to measure the ZF along another crystallographic direction, specifically [001], to identify if time-reversal symmetry breaking is observed along two crystallographic directions.
DOI: 10.5286/isis.e.rb2418003
title: ReMade: Structural and microstructural characterisation of a promising “eco-friendly” catalytic compound
DOI: 10.5286/isis.e.rb2418003-1
title: ReMade: Structural and microstructural characterisation of a promising “eco-friendly” catalytic compound
DOI: 10.3535/g6g-tep-wbr
title: Viola reichei Skottsb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/v3e-19w-2vz
title: Lunaria annua L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410358
title: Determining the role of inversion symmetry in single crystals of the noncentro-symmetric superconductor La7Ir3 by µSR: A continuation

description: In superconductors, the inversion symmetry of the crystallographic structure plays a central role in the formation of the Cooper pairs. When inversion symmetry is broken, there is the possibility of a mixing of singlet-triplet pairing, leading to unconventional superconducting properties. At Warwick, we have successfully synthesized large, high-quality single crystals of noncentrosymmetric hexagonal superconductor La7Ir3. We now aim to investigate what the role of broken inversion symmetry has on the superconducting properties of La7Ir3 using these single crystals. This proposal forms a continuation of a previous experiment, RB1810665. We have now fully analysed the data collected from RB1810665 and have identified significant issues with the data that were collected. In this new proposal we wish to collect the data again for the [100] crystallographic direction in TF and work closely with the instrument scientists to ensure that we can avoid the issue of stray fields which were the source of the issues in the original data. This will allow us to complete our analysis and write up our results. Further to this, we would also aim to measure the ZF along another crystallographic direction, specifically [001], to identify if time-reversal symmetry breaking is observed along two crystallographic directions.
DOI: 10.5286/isis.e.rb2510256
title: Effect of ionic radius on local structure in lanthanide doped cerias

description: Doped cerias are currently being used as oxide ion conducting electrolytes in intermediate temperature solid oxide fuel cells (SOFCs). Differences have been found in the local structures of neodymium doped ceria and gadolinium doped ceria, which we suspect are due to a small difference in the proximity of the ionic radii of Nd3+ and Gd3+ to the so called “critical radius” of 1.038 Å. Through reverse Monte Carlo analysis of total neutron scattering data, it is proposed to carefully study the local structures of lanthanum doped ceria and ytterbium doped ceria, where the dopant cations are respectively much larger than and much smaller than Nd3+ and Gd3+. In particular the effect of these dopants on dopant-vacancy association and vacancy pair ordering will be evaluated along with how such features change with temperature. The results of the study will help in the understanding the influences of small changes in local structure on ionic conductivity in such fluorite-based electrolytes.
DOI: 10.5286/isis.e.rb2510256-1
title: Effect of ionic radius on local structure in lanthanide doped cerias

description: Doped cerias are currently being used as oxide ion conducting electrolytes in intermediate temperature solid oxide fuel cells (SOFCs). Differences have been found in the local structures of neodymium doped ceria and gadolinium doped ceria, which we suspect are due to a small difference in the proximity of the ionic radii of Nd3+ and Gd3+ to the so called “critical radius” of 1.038 Å. Through reverse Monte Carlo analysis of total neutron scattering data, it is proposed to carefully study the local structures of lanthanum doped ceria and ytterbium doped ceria, where the dopant cations are respectively much larger than and much smaller than Nd3+ and Gd3+. In particular the effect of these dopants on dopant-vacancy association and vacancy pair ordering will be evaluated along with how such features change with temperature. The results of the study will help in the understanding the influences of small changes in local structure on ionic conductivity in such fluorite-based electrolytes.
DOI: 10.34816/ifao.archives.232957
title: SAQQARA_nb_1994_06023

description: Référence : nb_1994_06023<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/ncd-ytq-ew4
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/s61-f9r-xnj
title: Delphinium consolida subsp. consolida

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2270007-2
title: Study on spin fluctuations introduced by nanoparticulation of strongly correlated electron materials
DOI: 10.5286/isis.e.rb2510044
title: Evaluation of atomic structure of alkaline-earth aluminosilicates and aluminoborosilicate oxide glasses through Neutron and X-ray diffraction at ISIS

description: Understanding the relationship between plasticity and fracture in silicate glasses is essential to develop mechanically more robust, long-lasting glass products. In several practical use conditions, failure can be induced in glass due to significant tensile stresses. The material’s atomic structure primarily controls the magnitude and direction of these stresses. Recent work showed that substituting silica with boron oxide in alkaline-earth aluminoborosilicate (ABS) glasses resulted in a drastic change of plastic behavior under mechanical indentation from non-homogeneous plastic flow (shear banding) to homogeneous plasticity, also increasing the damage tolerance of the material. According to our recent study, it was also found that the type of alkaline earth ion changes the plastic behavior as well as the damage tolerance. This project aims to investigate the atomic structure of a group of ABS glasses containing different amounts of boron and alkaline-earth cations (Mg, Ca, Sr, Ba) using high-energy Neutron and X-ray diffraction experiments at ISIS. The results of this experimental proposal will provide clues about the structural role of boron and alkaline-earth cations on the plastic deformation behavior of these glasses. Moreover, the generated data will be essential for developing and validating interatomic potentials used in molecular dynamics simulations.