A 3D Tight‐Binding Model for La‐Based Cuprate Superconductors

Photopoulos, Raphaël; Frésard, Raymond

doi:10.1002/andp.201900177

Cited by 15 publications

(27 citation statements)

References 101 publications

(251 reference statements)

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“…The strong FS curvature of LSCO is sensitive to slight changes in the tight-binding hopping parameters. Detailed studies [84,85] of the 3D TB model for LSCO have included fourth-order in-plane hopping parameters and match well with LDA calculations at k z = 0 (i.e the Fermi level). Indeed, the addition of this hopping parameter is found to alter the FS in the same direction as the correction factor for p = 0.22, though its doping dependence is not widely reported.…”

Section: A7 Electronic Specific Heat Of Tl 2 Ba 2 Cuo 6+δmentioning

confidence: 59%

Possible superconductivity from incoherent carriers in overdoped cuprates

et al. 2021

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There is now compelling evidence that the normal state of superconducting overdoped cuprates is a strange metal comprising two distinct charge sectors, one governed by coherent quasiparticle excitations, the other seemingly incoherent and characterized by non-quasiparticle (Planckian) dissipation. The zero-temperature superfluid density n_s(0)ns(0) of overdoped cuprates exhibits an anomalous depletion with increased hole doping pp, falling to zero at the edge of the superconducting dome. Over the same doping range, the effective zero-temperature Hall number n_{\rm H}(0) transitions from pp to 1 + pp. By taking into account the presence of these two charge sectors, we demonstrate that in the overdoped cuprates Tl_22Ba_22CuO_{6+\delta}6+δ and La_{2-x}2−xSr_xxCuO_44, the growth in n_s(0)ns(0) as pp is decreased from the overdoped side may be compensated by the loss of carriers in the coherent sector. Such a correspondence is contrary to expectations from conventional BCS theory and implies that superconductivity in overdoped cuprates emerges uniquely from the sector that exhibits incoherent transport in the normal state.

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Section: A7 Electronic Specific Heat Of Tl 2 Ba 2 Cuo 6+δmentioning

confidence: 59%

Possible superconductivity from incoherent carriers in overdoped cuprates

et al. 2021

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“…These highly twodimensional characteristics of PLCCO are in contrast to the recently unveiled three-dimensional electronic structure of the hole-overdoped cuprate LSCO [23,24]. This difference stems from a reduced inter-layer hopping due to the absence of apical oxygen atoms in the electrondoped cuprates [25]. The two-dimensional nature of the electron-doped cuprates is also reflected by a large resistivity anisotropy ρ c /ρ ab > 10000 [26].…”

mentioning

confidence: 73%

Oxide Fermi liquid universality revealed by electron spectroscopy

Horio,

Kramer,

Wang

et al. 2020

Preprint

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We present a combined soft x-ray and high-resolution vacuum-ultraviolet angle-resolved photoemission spectroscopy study of the electron-overdoped cuprate Pr1.3−xLa0.7CexCuO4 (PLCCO). Demonstration of its highly two-dimensional band structure enabled precise determination of the in-plane self-energy dominated by electron-electron scattering. Through analysis of this self-energy and the Fermi-liquid cut-off energy scale, we find -in contrast to hole-doped cuprates -a momentum isotropic and comparatively weak electron correlation in PLCCO. Yet, the self-energies extracted from multiple oxide systems combine to demonstrate a logarithmic divergent relation between the quasiparticle scattering rate and mass. This constitutes a spectroscopic version of the Kadowaki-Woods relation with an important merit -the demonstration of Fermi liquid quasiparticle lifetime and mass being set by a single energy scale.

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“…Along the nodal and offnodal cuts [see in-plane Fermi surface map in Fig. 1 electron-doped cuprates [25]. The two-dimensional nature of the electron-doped cuprates is also reflected by a large resistivity anisotropy ρ c /ρ ab > 10 000 [26].…”

Section: Resultsmentioning

confidence: 99%

Oxide Fermi liquid universality revealed by electron spectroscopy

Horio¹,

Kramer²,

Wang³

et al. 2020

Phys. Rev. B

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We present a combined soft x-ray and high-resolution vacuum-ultraviolet angle-resolved photoemission spectroscopy study of the electron-overdoped cuprate Pr 1.3−x La 0.7 Ce x CuO 4 (PLCCO). Demonstration of its highly two-dimensional band structure enabled precise determination of the in-plane self-energy dominated by electron-electron scattering. Through analysis of this self-energy and the Fermi liquid cut-off energy scale, we find-in contrast to hole-doped cuprates-a momentum isotropic and comparatively weak electron correlation in PLCCO. Yet, the self-energies extracted from multiple oxide systems combine to demonstrate a logarithmic divergent relation between the quasiparticle scattering rate and mass. This constitutes a spectroscopic version of the Kadowaki-Woods relation with an important merit-the demonstration of Fermi liquid quasiparticle lifetime and mass being set by a single energy scale.

show abstract

A 3D Tight‐Binding Model for La‐Based Cuprate Superconductors

Cited by 15 publications

References 101 publications

Possible superconductivity from incoherent carriers in overdoped cuprates

Possible superconductivity from incoherent carriers in overdoped cuprates

Oxide Fermi liquid universality revealed by electron spectroscopy

Oxide Fermi liquid universality revealed by electron spectroscopy

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