Wiedemann-Franz law in the underdoped cuprate superconductor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>YBa</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Cu</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mi>y</mml:mi></mml:msub></mml:mrow></mml:math>

Grissonnanche, G.; Laliberté, F.; Dufour-Beauséjour, Sophie; Matusiak, Marcin; Badoux, S.; Tafti, Fazel; Michon, B.; Riopel, Alexis; Cyr-Choinière, O.; Baglo, Jordan; Ramshaw, B. J.; Liang, Ruixing; Bonn, D. A.; Hardy, W. N.; Krämer, Steffen; LeBoeuf, David; Graf, David; Doiron-Leyraud, N.; Taillefer, Louis

doi:10.1103/physrevb.93.064513

Cited by 44 publications

(47 citation statements)

References 49 publications

(53 reference statements)

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“…The picture we have of FS reconstruction in YBCO should also be tested against the field dependence of the Hall effect [3,63]. It has been pointed out [64] that the positive and negative curvatures of the reconstructed pockets give rise to a field dependence of the Hall effect, with a large value and electronlike sign at high fields.…”

Section: Discussionmentioning

confidence: 99%

Fermi surface reconstruction and quantum oscillations in underdopedYBa2Cu3O7−xmodeled in a single bilayer with mirror symmetry broken by charge density waves

et al. 2016

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Hole-doped high-temperature cuprate superconductors below optimum doping have electronlike Fermi surfaces occupying a small fraction of the Brillouin zone. There is strong evidence that this is linked to charge density wave (CDW) order, which reconstructs the large holelike Fermi surfaces predicted by band structure calculations. Recent experiments have revealed the structure of the two CDW components in the benchmark bilayer material YBa 2 Cu 3 O 7-x in high field where quantum oscillation (QO) measurements are performed. We have combined these results with a tight-binding description of the bands in a single bilayer to give a minimal model revealing the essential physics of the situation. Here we show that this approach, combined with the effects of spin-orbit interactions and the pseudogap, gives a good qualitative description of the multiple frequencies seen in the QO observations in this material. Magnetic breakdown through weak CDW splitting of the bands will lead to a field dependence of the QO spectrum and to the observed fourfold symmetry of the results in tilted fields.

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Section: Discussionmentioning

confidence: 99%

Fermi surface reconstruction and quantum oscillations in underdopedYBa2Cu3O7−xmodeled in a single bilayer with mirror symmetry broken by charge density waves

et al. 2016

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“…However, we observe bound states up to at least 45 T (Fig. 2), far above the upper critical field H c2 24± 2 T in YBa 2 Cu 3 O 6.56 [76][77][78]. In order to explain our results, Andreev bound states would then have to be pinned by disorder and to survive in the metallic but non-superconducting state above H c2 .…”

mentioning

confidence: 98%

Quasiparticle Scattering off Defects and Possible Bound States in Charge-Ordered YBa2Cu3Oy
Zhou
¹
,
Hirata
²
,
Wu
³

et al. 2017
Phys. Rev. Lett.
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Observing how electronic states in solids react to a local symmetry breaking provides insight into their microscopic nature. A striking example is the formation of bound states when quasiparticles are scattered off defects. This is known to occur, under specific circumstances, in some metals and superconductors but not, in general, in the charge-density-wave (CDW) state. Here, we report the unforeseen observation of bound states when a magnetic field quenches superconductivity and induces long-range CDW order in YBa2Cu3Oy. Bound states indeed produce an inhomogeneous pattern of the local density of states N (EF ) that leads to a skewed distribution of Knight shifts which is detected here through an asymmetric profile of 17 O NMR lines. We argue that the effect arises most likely from scattering off defects in the CDW state, which provides a novel case of disorder-induced bound states in a condensed-matter system and an insightful window into charge ordering in the cuprates.Recent experiments in high-T c copper-oxides at moderate doping levels have led to a consensus regarding the presence of static, but essentially short-range, spatial modulations of the charge density that appear far above the critical temperature T c and compete with superconductivity below T c [1, 3,[3][4][5][6][7][8][9][10][11][12]. As a result, the debate has mainly focused on this "incipient" charge-density-wave (CDW) in zero magnetic field. Somewhat less attention has been paid to another CDW order that also coexists and competes with superconductivity but is present at lower temperatures, only in high magnetic fields, and has been detected only in YBa 2 Cu 3 O y (YBCO) so far, by nuclear magnetic resonance (NMR) [1,13] and more recently by X-ray diffraction [2,15]. This CDW develops long-range three-dimensional (3D) correlations above a critical field (also detected in sound velocity [17] and thermal conductivity measurements [18]). In principle, the long-range coherence of the high-field CDW makes it a unique playground for investigating the nature of CDW order in cuprates and its interplay with superconductivity [19]. However, since its observation requires high fields, experimental characterization of this phase has remained limited. This evidently prompts for further high field experiments in YBCO.Here, we report that a spatial distribution of 17 O Knight shift values develops alongside with the high-field CDW in YBCO. After discarding broadening by the vortex lattice or magnetic order, we explain the effect by an enhancement of N (E F ), the local density-of-states (LDOS) at the Fermi energy E F , due to the formation of quasiparticle bound states as observed around defects in the superconducting state of cuprates [5,[20][21][22][23][25][26][27]. This unforeseen observation raises fundamental questions on the electronic band structure and the nature of defects in the CDW state.17 O-enriched untwinned single crystals of YBa 2 Cu 3 O y were prepared with y nominal = 6.47 (ortho-II oxygen ordering, hereafter O-II), 6.56 (O-II), 6.68 (O...

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“…While ARPES relies on an excellent surface quality, QOs need to be performed at high magnetic fields of the order of 10 T in metals but are typically interpreted using band structure calculations at zero field. The ability of QOs to interpret zero-field properties is therefore under intense discussion, e.g., in high-temperature superconductors [1][2][3][4][5] and low-carrier-density topological materials with surface states [6].…”

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confidence: 99%

Cascade of Magnetic-Field-Induced Lifshitz Transitions in the Ferromagnetic Kondo Lattice Material YbNi4P2

et al. 2017

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Wiedemann-Franz law in the underdoped cuprate superconductorYBa2Cu3Oy

Cited by 44 publications

References 49 publications

Fermi surface reconstruction and quantum oscillations in underdopedYBa2Cu3O7−xmodeled in a single bilayer with mirror symmetry broken by charge density waves

Fermi surface reconstruction and quantum oscillations in underdopedYBa2Cu3O7−xmodeled in a single bilayer with mirror symmetry broken by charge density waves

Quasiparticle Scattering off Defects and Possible Bound States in Charge-Ordered YBa2Cu3Oy
Zhou
¹
,
Hirata
²
,
Wu
³

et al. 2017
Phys. Rev. Lett.
Self Cite
11
1
33
1
View full text Add to dashboard Cite

Cascade of Magnetic-Field-Induced Lifshitz Transitions in the Ferromagnetic Kondo Lattice Material YbNi4P2

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Wiedemann-Franz law in the underdoped cuprate superconductorYBa2Cu3Oy

Cited by 44 publications

References 49 publications

Fermi surface reconstruction and quantum oscillations in underdopedYBa2Cu3O7−xmodeled in a single bilayer with mirror symmetry broken by charge density waves

Fermi surface reconstruction and quantum oscillations in underdopedYBa2Cu3O7−xmodeled in a single bilayer with mirror symmetry broken by charge density waves

Quasiparticle Scattering off Defects and Possible Bound States in Charge-Ordered YBa2Cu3OyZhou1, Hirata2, Wu3 et al. 2017Phys. Rev. Lett.Self Cite111331View full textAdd to dashboardCite

Cascade of Magnetic-Field-Induced Lifshitz Transitions in the Ferromagnetic Kondo Lattice Material YbNi4P2

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Quasiparticle Scattering off Defects and Possible Bound States in Charge-Ordered YBa2Cu3Oy
Zhou
¹
,
Hirata
²
,
Wu
³

et al. 2017
Phys. Rev. Lett.
Self Cite
11
1
33
1
View full text Add to dashboard Cite