Evolution of the pseudogap and excess conductivity of YBa2Cu3O7–δ single crystals in the course of long-term aging
Sign Up to like & getrecommendations! Published in 2023 at "Low Temperature Physics"
DOI: 10.1063/10.0017593
Abstract: The temperature dependences of both fluctuation conductivity (FLC) σ ′( T) and pseudogap (PG) Δ*( T) derived from measurements of resistivity ρ( T) of an optimally doped YBa2Cu3O7−δ single crystal subjected to long-term storage have… read more here.
Keywords: single crystals; long term; yba2cu3o7 single; pseudogap ... See more keywords
Pseudogap-induced anisotropic suppression of electronic Raman response in cuprate superconductors
Sign Up to like & getrecommendations! Published in 2017 at "Philosophical Magazine Letters"
DOI: 10.1080/09500839.2017.1314037
Abstract: It has become clear that the anomalous properties of cuprate superconductors are intimately related to the formation of a pseudogap. Within the framework of the kinetic-energy-driven superconducting mechanism, the effect of the pseudogap on the… read more here.
Keywords: raman response; energy; pseudogap; electronic raman ... See more keywords
Mechanisms of screening or enhancing the pseudogap throughout the two-band Bardeen-Cooper-Schrieffer to Bose-Einstein condensate crossover
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.220504
Abstract: We demonstrate the rise-and-fall of multiple pseudogaps in the Bardeen-Cooper-Schrieffer-Bose-Einstein-condensation (BCS-BEC) crossover in two-band fermionic systems having different pairing strengths in the deep band and in the shallow band. The striking features of this phenomenon… read more here.
Keywords: bose einstein; cooper schrieffer; schrieffer bose; pseudogap ... See more keywords
Exactly solvable model of Fermi arcs and pseudogap
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.024529
Abstract: We introduce a very simple and exactly solvable model that supports Fermi arcs in its ground state and excitation spectrum. These arcs come in pairs, and merge into what we call a pseudo-Fermi surface along… read more here.
Keywords: solvable model; fermi arcs; pseudogap; exactly solvable ... See more keywords
Fermi arcs and pseudogap in a lattice model of a doped orthogonal metal
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.165131
Abstract: Since the discovery of the pseudogap and Fermi arc states in underdoped cuprates, the understanding of such non-Fermi-liquid states and the associated violation of Luttinger's theorem have been the central theme in correlated electron systems.… read more here.
Keywords: fermi arcs; fermi arc; pseudogap; fermi ... See more keywords
Multiple-pseudogap phases in the hydrogen-doped LaFeAsO system
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.064501
Abstract: The low-energy electronic structure of $\mathrm{LaFeAs}{\mathrm{O}}_{1\ensuremath{-}x}{\mathrm{H}}_{x}$ $(0.0\ensuremath{\le}x\ensuremath{\le}0.60)$, a system which exhibits two superconducting domes and antiferromagnetic orders in its phase diagram, is investigated by utilizing laser photoemission spectroscopy. From the precise temperature-dependent measurement of the… read more here.
Keywords: system; pseudogap; hydrogen doped; phases hydrogen ... See more keywords
Probing of the pseudogap via thermoelectric properties in the Au-Al-Gd quasicrystal approximant
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.104201
Abstract: The pseudogap of the recently discovered Au-Al-Gd quasicrystal approximant crystal (AC) is investigated over a wide electron-per-atom $(e/a)$ ratio of $\ensuremath{\sim}0.5$ using thermoelectric properties as an experimental probe. This Au-Al-Gd AC provides an ideal platform… read more here.
Keywords: thermoelectric properties; probing pseudogap; ensuremath; pseudogap ... See more keywords
Ultrafast quasiparticle dynamics in the correlated semimetal Ca3Ru2O7
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.155111
Abstract: The correlated polar semimetal Ca$_3$Ru$_2$O$_7$ exhibits a rich phase diagram including two magnetic transitions ($T_N$=56 K and $T_C$=48 K) with the appearance of an insulating-like pseudogap (at $T_C$). In addition, there is a crossover back… read more here.
Keywords: dynamics correlated; correlated semimetal; pseudogap; ultrafast quasiparticle ... See more keywords
Hybridization-Controlled Pseudogap State in the Quantum Critical Superconductor CeCoIn_{5}.
Sign Up to like & getrecommendations! Published in 2023 at "Physical review letters"
DOI: 10.1103/physrevlett.130.076301
Abstract: The origin of the partial suppression of the electronic density states in the enigmatic pseudogap behavior, which is at the core of understanding high-T_{c} superconductivity, has been hotly contested as either a hallmark of preformed… read more here.
Keywords: pseudogap; hybridization; superconductor cecoin; quantum critical ... See more keywords
Wiedemann-Franz Law and Abrupt Change in Conductivity across the Pseudogap Critical Point of a Cuprate Superconductor
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review X"
DOI: 10.1103/physrevx.8.041010
Abstract: The thermal conductivity $\kappa$ of the cuprate superconductor La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$ was measured down to 50 mK in seven crystals with doping from $p=0.12$ to $p=0.24$, both in the superconducting state and in the magnetic field-induced normal… read more here.
Keywords: state; pseudogap; critical point; kappa ... See more keywords