Anisotropic destruction of the Fermi surface in inhomogeneous holographic lattices
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2020)065
Abstract: We analyze fermionic response of strongly correlated holographic matter in presence of inhomogeneous periodically modulated potential mimicking the crystal lattice. The modulation is sourced by a scalar operator that explicitly breaks the translational symmetry in… read more here.
Keywords: inhomogeneous holographic; physics; destruction fermi; fermi surface ... See more keywords
Fermi surface volume of interacting systems
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Physics"
DOI: 10.1016/j.aop.2019.03.016
Abstract: Three Fermion sumrules for interacting systems are derived at T=0, involving the number expectation $\bar{N}(\mu)$, canonical chemical potentials $\mu(m)$, a logarithmic time derivative of the Greens function $\gamma_{\vec{k} \sigma}$ and the static Greens function. In… read more here.
Keywords: fermi surface; vec; interacting systems; vec sigma ... See more keywords
Emergence of superconductivity from fully incoherent normal state in an iron-based superconductor (Ba0.6K0.4)Fe2As2
Sign Up to like & getrecommendations! Published in 2019 at "Science Bulletin"
DOI: 10.1016/j.scib.2018.11.017
Abstract: Abstract In unconventional superconductors, it is generally believed that understanding the physical properties of the normal state is a pre-requisite for understanding the superconductivity mechanism. In conventional superconductors like niobium or lead, the normal state… read more here.
Keywords: state; well defined; normal state; fermi surface ... See more keywords
Structural Metastability and Fermi Surface Topology of SrAl2Si2.
Sign Up to like & getrecommendations! Published in 2021 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.1c01656
Abstract: SrAl2Si2 crystallizes into either a semimetallic, CaAl2Si2-type, α phase or a superconducting, BaZn2P2-type, β phase. We explore possible α→Pc,Tcβ transformations by employing pressure- and temperature-dependent free-energy calculations, vibrational spectral calculations, and room-temperature synchrotron powder X-ray… read more here.
Keywords: fermi surface; phase; pressure; surface topology ... See more keywords
Nonlinear magnetotransport shaped by Fermi surface topology and convexity
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-09208-8
Abstract: The nature of Fermi surface defines the physical properties of conductors and many physical phenomena can be traced to its shape. Although the recent discovery of a current-dependent nonlinear magnetoresistance in spin-polarized non-magnetic materials has… read more here.
Keywords: temperature; surface topology; topology; convexity ... See more keywords
Fermi surface in La-based cuprate superconductors from Compton scattering imaging
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-22229-6
Abstract: Compton scattering provides invaluable information on the underlying Fermi surface (FS) and is a powerful tool complementary to angle-resolved photoemission spectroscopy and quantum oscillation measurements. Here we perform high-resolution Compton scattering measurements for La2−xSrxCuO4 with… read more here.
Keywords: surface based; cuprate superconductors; based cuprate; fermi surface ... See more keywords
Spin excitations and the Fermi surface of superconducting FeS
Sign Up to like & getrecommendations! Published in 2017 at "npj Quantum Materials"
DOI: 10.1038/s41535-017-0019-6
Abstract: High-temperature superconductivity occurs near antiferromagnetic instabilities and the nematic state. Debate remains on the origin of nematic order in FeSe and its relation with superconductivity. Here, we use transport, neutron scattering and Fermi surface measurements to demonstrate… read more here.
Keywords: nematic order; fermi surface; spin excitations; superconductivity ... See more keywords
Fermi surface topology and magnetotransport in semimetallic LuSb
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-12792-8
Abstract: Several rare-earth monopnictides were shown to exhibit extreme magnetoresistance and field-induced low-temperature plateau of electrical resistivity. These features are also hallmarks of topological semimetals, thus the family is intensively explored with respect to magneto-transport properties… read more here.
Keywords: topology; fermi surface; magnetotransport; lusb ... See more keywords
Topological quantum phase transition in the magnetic semimetal HoSb
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Materials Chemistry C"
DOI: 10.1039/d1tc01034d
Abstract: Magnetic topological semimetals, a novel state of quantum matter with nontrivial band topology, have emerged as a new frontier in physics and materials science. An external stimulus like temperature or magnetic field could be expected… read more here.
Keywords: topological quantum; hosb; fermi surface; phase ... See more keywords
Improvement of electrical-resistivity model for polycrystalline films of metals with non-spherical Fermi surface: A case for Os films
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4979730
Abstract: Osmium (Os) is a hexagonal-close-packed metal with a non-spherical Fermi surface that seriously deviates from the assumption in the Mayadas-Shatzkes electrical-resistivity model (MS model) for the size effects of polycrystalline films of metals due to… read more here.
Keywords: resistivity; spherical fermi; model; non spherical ... See more keywords
Effects of a k⃗-dependent Hybridisation on the Fermi surface of an extended d–p Hubbard model
Sign Up to like & getrecommendations! Published in 2019 at "Philosophical Magazine"
DOI: 10.1080/14786435.2020.1725252
Abstract: ABSTRACT The topology of the Fermi surface of an extended d–p Hubbard model is investigated using Green's function technique in a n-pole approximation. The effects of the d–p hybridisation on the Fermi surface are the… read more here.
Keywords: hybridisation; topology; extended hubbard; surface extended ... See more keywords