Anisotropic breakdown of Fermi liquid quasiparticle excitations in overdoped La2−xSrxCuO4

Chang, J.; Må̊nsson, Martin; Pailhés, S.; Claesson, Thomas; Lipscombe, O. J.; Hayden, Stephen M; Patthey, L.; Tjernberg, Oscar; Mesot, J.

doi:10.1038/ncomms3559

Cited by 52 publications

(69 citation statements)

References 50 publications

(60 reference statements)

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“…Using the experimental values of v F and η, we find that Landau quasiparticles are coherent for ω < 1/v F η ∼ 0.19 eV. This energy scale is comparable to ω c -the energy scale below which ∝ ω 2 -and hence reenforces the interpretation of ω c as an energy scale related to the break down of Landau Fermi-liquid quasiparticle excitations [19].…”

Section: Discussionmentioning

confidence: 76%

“…2, yields γ nqp ∼ ln(C/ω c ), where C is an unknown constant. Hence γ nqp diverges only logarithmically in the limit ω c → 0 [19]. On the other hand, for large ω c the role of γ nqp will be less important.…”

Section: Discussionmentioning

confidence: 98%

“…This is not necessarily inconsistent with the ARPES data. The Fermi-liquid cutoff energy scale, ω c , softens rapidly as a function of Fermi surface angle, and the quasiparticle scattering is globally dependent on momentum [19]. This implies (1) that the contribution from non-Fermi-liquid excitations will become increasingly important and (2) thatẐ < 1 on certain portions of the Fermi surface.…”

Section: Discussionmentioning

confidence: 99%

“…This is a common procedure [25] and an example of a raw background spectrum can be found in the supplemental information of Ref. [19]. In this fashion, EDCs recorded at a momentum |k| larger than the Fermi momentum |k F | [displayed with open circles in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

Fatuzzo

Sassa²,

Må̊nsson³

et al. 2014

Phys. Rev. B

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Nodal angle-resolved photoemission spectra taken on overdoped La 1.77 Sr 0.23 CuO 4 are presented and analyzed. It is proven that the low-energy excitations are true Landau Fermi-liquid quasiparticles. We show that momentum and energy distribution curves can be analyzed self-consistently without quantitative knowledge of the bare band dispersion. Finally, by imposing Kramers-Kronig consistency on the self-energy , insight into the quasiparticle residue is gained. We conclude by comparing our results to quasiparticle properties extracted from thermodynamic, magnetoresistance, and high-field quantum oscillation experiments on overdoped Tl 2 Ba 2 CuO 6+δ .

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Section: Discussionmentioning

confidence: 76%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

Fatuzzo

Sassa²,

Må̊nsson³

et al. 2014

Phys. Rev. B

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“…31 and 32. Similar samples have been well characterized by inelastic neutron scattering (INS) 32 and angle-resolved photoemission spectroscopy (ARPES) 33 . The Sr stoichiometry, x, was measured by scanning electron microscopy with energy dispersive xray analysis (EDX) and also by inductively-coupled plasma atomic-emission spectroscopy (ICP-AES).…”

Section: A Samplesmentioning

confidence: 99%

Charge density wave fluctuations inLa2−xSrxCuO4and their competition

et al. 2014

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We report hard (14 keV) x-ray diffraction measurements on three compositions (x = 0.11, 0.12, 0.13) of the high-temperature superconductor La 2−x Sr x CuO 4 . All samples show charge-density-wave (CDW) order with onset temperatures in the range 51-80 K and ordering wavevectors close to (0.23,0,0.5). The CDW is strongest with the longest in-plane correlation length near 1/8 doping. On entering the superconducting state the CDW is suppressed, demonstrating the strong competition between the charge order and superconductivity. CDW order coexists with incommensurate magnetic order and the wavevectors of the two modulations have the simple relationship δ charge = 2δ spin . The intensity of the CDW Bragg peak tracks the intensity of the low-energy (quasi-elastic) spin fluctuations. We present a phase diagram of La 2−x Sr x CuO 4 including the pseudogap phase, CDW and magnetic order.

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

Photopoulos

Frésard

2019

Annalen der Physik

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Motivated by the recent experimental determination of the three-dimensional Fermi surface of overdoped Labased cuprate superconductors [Horio et al., Phys. Rev. Lett. 2018, 121, 077004], we revisit the tight-binding parameterization of their conduction band. We construct a minimal tight-binding model entailing eight orbitals, two of them involving apical oxygen ions. Parameter optimization allows to almost perfectly reproduce the three-dimensional conduction band as obtained from density functional theory (DFT). We discuss how each parameter entering this multiband model influences it, and show that the peculiar form of its dispersion severely constraints the parameter values. We then evidence that standard perturbative derivation of an effective one-band model is poorly converging because of the comparatively small value of the charge transfer gap. Yet, this allows us to unravel the microscopical origin of the in-plane and out-of-plane hopping amplitudes. An alternative approach to the computation of the tight-binding parameters of the effective model is presented and worked out. It results that the agreement with DFT is preserved provided longer-ranged hopping amplitudes are retained. A comparison with existing models is also performed. Finally, the Fermi surface, showing staggered pieces alternating in size and shape, is compared to experiment, with the density of states also being calculated.

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Anisotropic breakdown of Fermi liquid quasiparticle excitations in overdoped La2−xSrxCuO4

Cited by 52 publications

References 50 publications

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

Charge density wave fluctuations inLa2−xSrxCuO4and their competition

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

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