Eliashberg equations for an electron–phonon version of the Sachdev–Ye–Kitaev model: Pair breaking in non-Fermi liquid superconductors
Sign Up to like & getrecommendations! Published in 2020 at "Annals of Physics"
DOI: 10.1016/j.aop.2020.168120
Abstract: We present a theory that is a non-Fermi-liquid counterpart of the Abrikosov-Gor'kov pair-breaking theory due to paramagnetic impurities in superconductors. To this end we analyze a model of interacting electrons and phonons that is a… read more here.
Keywords: non fermi; fermi liquid; state; model ... See more keywords
Identification of non-Fermi liquid fermionic self-energy from quantum Monte Carlo data
Sign Up to like & getrecommendations! Published in 2020 at "npj Quantum Materials"
DOI: 10.1038/s41535-020-00266-6
Abstract: Quantum Monte Carlo (QMC) simulations of correlated electron systems provide unbiased information about system behavior at a quantum critical point (QCP) and can verify or disprove the existing theories of non-Fermi liquid (NFL) behavior at… read more here.
Keywords: quantum; monte carlo; quantum monte; self energy ... See more keywords
Non-Fermi-liquid types of behavior associated with a magnetic quantum critical point in Sr(Co1−xNix)2As2 single crystals
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.094447
Abstract: The compound SrCo2As2 with the body-centered tetragonal ThCr2Si2 structure is known to remain paramagnetic down to a temperature T = 0.05 K, but inelastic neutron scattering studies have shown that ... read more here.
Keywords: liquid types; types behavior; behavior associated; associated magnetic ... See more keywords
Magnetization, d -wave superconductivity, and non-Fermi-liquid behavior in a crossover from dispersive to flat bands
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.125141
Abstract: We explore the effect of inhomogeneity on electronic properties of the two-dimensional Hubbard model on a square lattice using dynamical mean-field theory (DMFT). The inhomogeneity is introduced via modulated lattice hopping such that in the… read more here.
Keywords: wave superconductivity; fermi liquid; inhomogeneity; non fermi ... See more keywords
Projective fixed points for non-Fermi liquids: A case study of the Ising-nematic quantum critical metal
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.155142
Abstract: In metals, low-energy effective theories are characterized by a set of coupling functions. Among them, the angle-dependent Fermi momentum specifies the size and shape of Fermi surface. Since the Fermi momentum grows incessantly under the… read more here.
Keywords: non fermi; points non; coupling functions; projective fixed ... See more keywords
Orbital selective order and Z3 Potts nematicity from a non-Fermi liquid
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.165158
Abstract: Motivated by systems where a high temperature non-Fermi liquid gives way to low temperature $\mathbb{Z}_3$ Potts nematic order, we studied a three-orbital Sachdev-Ye-Kitaev (SYK) model in the large-$N$ limit. In the single-site limit, this model… read more here.
Keywords: temperature; fermi liquid; non fermi; mml mml ... See more keywords
Anisotropy induces non-Fermi-liquid behavior and nematic magnetic order in three-dimensional Luttinger semimetals
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.075149
Abstract: We illuminate the intriguing role played by spatial anisotropy in three-dimensional Luttinger semimetals featuring quadratic band touching and long-range Coulomb interactions. We observe the anisotropy to be subject to an exceptionally slow renormalization group (RG)… read more here.
Keywords: three dimensional; luttinger semimetals; dimensional luttinger; fermi liquid ... See more keywords
Non-Fermi liquids at finite temperature: Normal-state and infrared singularities
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.144508
Abstract: We analyze quantum criticality at finite temperature for a class of non-Fermi liquids with massless bosons. Finite temperature gives rise to new infrared singularities that invalidate standard perturbative treatments. We show how such divergences are… read more here.
Keywords: finite temperature; temperature; fermi liquids; infrared singularities ... See more keywords
Non-Fermi-liquid fixed points and anomalous Landau damping in a quantum critical metal
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.201113
Abstract: Funding: CM-CDT under UK Engineering and Physical Sciences Research Council (EPSRC) (UK) Grant No. EP/L015110/1 (M.J.T.); TOPNES programme under EPSRC (UK) Grant No. EP/I031014/1 (C.A.H.). read more here.
Keywords: points anomalous; liquid fixed; fixed points; anomalous landau ... See more keywords
Symmetry-protected non-Fermi liquids, kagome spin liquids, and the chiral Kondo lattice model
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.035155
Abstract: The theoretical description of non-Fermi liquids is among the most challenging questions in strongly correlated quantum matter. While there are many experimental candidates for such phases, few examples can be studied using controlled theoretical approaches.… read more here.
Keywords: kagome spin; spin liquids; chiral kondo; model ... See more keywords
Single-Site Non-Fermi-Liquid Behaviors in a Diluted 4f^{2} System Y_{1-x}Pr_{x}Ir_{2}Zn_{20}.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.077206
Abstract: Electrical resistivity ρ(T) and specific heat C(T) measurements have been made on the diluted 4f^{2} system Y(Pr)Ir_{2}Zn_{20}. Both data of ρ and magnetic specific heat C_{m} per Pr ion are well scaled as a function… read more here.
Keywords: diluted system; fermi liquid; non fermi; single site ... See more keywords