Optical conductivity of overdoped cuprate superconductors: Application to 
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Lee-Hone, N. R.; Mishra, Vivek; Broun, D. M.; Hirschfeld, P. J.

doi:10.1103/physrevb.98.054506

Cited by 52 publications

(38 citation statements)

References 43 publications

(71 reference statements)

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“…Our conclusions contradict those of recent experimental studies of superfluid density and optical conductivity on high quality LSCO films [24,25]. Starting from the same dirty d-wave framework and disorder parameters used previously to study the relative temperature dependence of superfluid density [26] and terahertz (THz) conductivity [27] in LSCO, we show that the absolute superfluid density, residual specific heat, Volovik effect, and thermal conductivity can also be understood in LSCO. We then extend the comparison to the Tl-2201 system, another single-layer cuprate that can be tuned throughout the overdoped regime.…”

Section: Introductioncontrasting

confidence: 97%

“…In Fig. 1(a) we show how two very different T c (p) relations, corresponding approximately to those of Tl-2201 and LSCO, can emerge from a single clean-limit reference system (single T c0 (p) curve), using the Abrikosov-Gor'kov T c suppression, with N /π = 18 K for the LSCO-like curve, as in earlier work [26,27] and N /π = 6 K for Tl-2201. Note that a larger critical doping naturally emerges for Tl-2201 (p c2 = 0.31) than for LSCO (p c2 = 0.26), in accord with experiment [28][29][30].…”

Section: Comparison Of Lsco and Tl-2201mentioning

confidence: 62%

“…4 we calculate σ 1 ( ) in LSCO (updated from Ref. [27] to incorporate the new, lower degree of unitarity scattering) and compare it to expected results for Tl-2201. The conductivity at frequency is given by…”

Section: Comparison Of Lsco and Tl-2201mentioning

confidence: 97%

“…The history and structure of the dirty d-wave theory have been reviewed recently in Ref. [27]. It is based on the singleparticle Green's function…”

Section: Dirty D-wave Theorymentioning

confidence: 99%

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Low energy phenomenology of the overdoped cuprates: Viability of the Landau-BCS paradigm

Lee-Hone

Özdemir

Mishra

et al. 2020

Phys. Rev. Research

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We use dirty d-wave BCS theory to calculate absolute superfluid density, residual specific heat, Volovik effect, and thermal conductivity and compare to experiments on the cuprate superconductor La 2−x Sr x CuO 4 , showing that the theory provides a surprisingly good account of the data across the overdoped region. The starting point is an empirical angle-resolved photoemission spectroscopy-based parametrization of the electronic structure, including substantial Fermi-liquid renormalizations. Furthermore, a proper treatment of the less-explored weak out-of-plane dopant disorder limit is found to be essential. We then show that the same approach captures the low energy physics of another important overdoped cuprate, Tl-2201, thought to be much "cleaner" since it exhibits quantum oscillations, low residual resistivities, and small superconducting state Sommerfeld coefficients. We conclude that the low energy properties of cuprates are remarkably well described in the overdoped regime by dirty d-wave theory, without the need to introduce physics beyond the Landau-BCS paradigm.

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Section: Introductioncontrasting

confidence: 97%

Section: Comparison Of Lsco and Tl-2201mentioning

confidence: 62%

Section: Comparison Of Lsco and Tl-2201mentioning

confidence: 97%

“…The history and structure of the dirty d-wave theory have been reviewed recently in Ref. [27]. It is based on the singleparticle Green's function…”

Section: Dirty D-wave Theorymentioning

confidence: 99%

See 2 more Smart Citations

Low energy phenomenology of the overdoped cuprates: Viability of the Landau-BCS paradigm

Lee-Hone

Özdemir

Mishra

et al. 2020

Phys. Rev. Research

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“…64 and 65 if we assume that the in-plane superfluid stiffness measured in these experiments behaves in the same way as ρ zz calculated here. It has however been argued theoretically that the behavior of the superfluid stiffness on the overdoped side is consistent with BCS dirty d-wave behavior 66,67 .…”

Section: B Hole-doped Cupratesmentioning

confidence: 85%

Superfluid stiffness in cuprates: Effect of Mott transition and phase competition

et al. 2019

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Superfluid stiffness ρs is a defining characteristic of the superconducting state, allowing phase coherence and supercurrent. It is accessible experimentally through the penetration depth. Coexistence of d-wave superconductivity with other phases in underdoped cuprates, such as antiferromagnetism (AF) or charge-density waves (CDW), may drastically alter ρs. To shed light on this physics, the zero-temperature value of ρs = ρzz along the c-axis was computed for different values of Hubbard interaction U and different sets of tight-binding parameters describing the high-temperature superconductors YBCO and NCCO. We used Cellular Dynamical Mean-Field Theory for the one-band Hubbard model with exact diagonalization as impurity solver and state-of-the-art bath parametrization. We conclude that Mott physics plays a dominant role in determining the superfluid stiffness on the hole-doped side of the phase diagram. On the electron-doped side, antiferromagnetism wins over superconductivity near half-filling. But upon approaching optimal electron-doping, homogeneous coexistence between superconductivity and antiferromagnetism causes the superfluid stiffness to drop sharply. Hence, on the electron-doped side, it is competition between antiferromagnetism and d-wave superconductivity that plays a dominant role in determining the value of ρzz near half-filling. At large overdoping, ρzz behaves in a more BCS-like manner in both the electron-and hole-doped cases. We comment on some qualitative implications of these results for the superconducting transition temperature.

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Non-vanishing zero-temperature normal density in holographic superfluids

Goutéraux¹,

Mefford²

2020

J. High Energ. Phys.

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The low energy and finite temperature excitations of a d + 1-dimensional system exhibiting superfluidity are well described by a hydrodynamic model with two fluid flows: a normal flow and a superfluid flow. In the vicinity of a quantum critical point, thermodynamics and transport in the system are expected to be controlled by the critical exponents and by the spectrum of irrelevant deformations away from the quantum critical point. Here, using gauge-gravity duality, we present the low temperature dependence of thermodynamic and charge transport coefficients at first order in the hydrodynamic derivative expansion in terms of the critical exponents. Special attention will be paid to the behavior of the charge density of the normal flow in systems with emergent infrared conformal and Lifshitz symmetries, parameterized by a Lifshitz dynamical exponent z > 1. When 1 ≤ z < d + 2, we recover (z = 1) and extend (z > 1) previous results obtained by relativistic effective field theory techniques. Instead, when z > d + 2, we show that the normal charge density becomes non-vanishing at zero temperature. An extended appendix generalizes these results to systems that violate hyperscaling as well as systems with generalized photon masses. Our results clarify previous work in the holographic literature and have relevance to recent experimental measurements of the superfluid density on cuprate superconductors.

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Optical conductivity of overdoped cuprate superconductors: Application to La2−xSrxCuO4

Cited by 52 publications

References 43 publications

Low energy phenomenology of the overdoped cuprates: Viability of the Landau-BCS paradigm

Low energy phenomenology of the overdoped cuprates: Viability of the Landau-BCS paradigm

Superfluid stiffness in cuprates: Effect of Mott transition and phase competition

Non-vanishing zero-temperature normal density in holographic superfluids

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