Quantum oscillations in the nematic superconductors FeSe1-xSx
University of Oxford (2018)
Abstract:
These are the Raw data used to generate the figures related to the publication: "Evolution of the Fermi surface of the nematic superconductors FeSe1-xSx" by A. I. Coldea et al.Ultra-high critical current densities, the vortex phase diagram and the effect of granularity of the stoichiometric high-T c superconductor, CaKFe4As4
University of Oxford (2018)
Abstract:
These data make up the figures of the paper with the same name to be published in Physical Review Materials. The data are raw .DAT file created mainly by measuring magnetization in magnetic field at different temperatures and analysing the raw data, as described in the paper.Suppression of electronic correlations by chemical pressure from FeSe to FeS
Phys. Rev. B 96, 121103(R) (2017) American Physical Society (2017)
Abstract:
Iron-based chalcogenides are complex superconducting systems in which orbitally-dependent electronic correlations play an important role. Here, using high-resolution angle-resolved photoemission spectroscopy, we investigate the effect of these electronic correlations outside the nematic phase in the tetragonal phase of superconducting FeSe1-xSx (x = 0; 0:18; 1). With increasing sulfur substitution, the Fermi velocities increase significantly and the band renormalizations are suppressed towards a factor of 1.5-2 for FeS. Furthermore, the chemical pressure leads to an increase in the size of the quasi-two dimensional Fermi surface, compared with that of FeSe, however, it remains smaller than the predicted one from first principle calculations for FeS. Our results show that the isoelectronic substitution is an effective way to tune electronic correlations in FeSe1-xSx, being weakened for FeS with a lower superconducting transition temperature. This suggests indirectly that electronic correlations could help to promote higher-Tc superconductivity in FeSe.Formation of Hubbard-like bands as a fingerprint of strong electron-electron interactions in FeSe
PHYSICAL REVIEW B 95:8 (2017) ARTN 081106
de Haas–van Alphen study of role of4 f electrons in antiferromagneticCeZn 11 as compared to its nonmagnetic analogLaZn 11
Physical Review B American Physical Society (APS) 94:23 (2016) 235103