Universal quantum oscillations in the underdoped cuprate superconductors

Barišić, N.; Badoux, S.; Chan, M. K.; Dorow, C. J.; Tabiś, Wojciech; Vignolle, Baptiste; Yu, Guichuan; Béard, J.; Zhao, Xudong; Proust, Cyril; Greven, M.

doi:10.1038/nphys2792

Cited by 152 publications

(188 citation statements)

References 32 publications

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“…This is similar to the iron pnictide superconductors, where the nematic state is directly observable on the Fermi surface, 14 and suggests that the physics underlying both the superconductivity and the quantum criticality in these two classes of materials share a similar origin. Our Fermi surface model predicts that for tetragonal HgBa 2 CuO 4 , where both short-range CDW order and a small Fermi surface have been observed, 61,62 sufficient uniaxial strain should favour anisotropic CDW formation and give rise to anisotropic AMR similar to what we have observed in YBa 2 Cu 3 O 6.58 .…”

Section: Discussionsupporting

confidence: 68%

Broken rotational symmetry on the Fermi surface of a high-Tc superconductor

et al. 2017

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Broken fourfold rotational (C4) symmetry is observed in the experimental properties of several classes of unconventional superconductors. It has been proposed that this symmetry breaking is important for superconducting pairing in these materials, but in the high-Tc cuprates this broken symmetry has never been observed on the Fermi surface. Here we report a pronounced anisotropy in the angle dependence of the interlayer magnetoresistance of the underdoped high transition temperature (high-Tc) superconductor YBa2Cu3O6.58, directly revealing broken C4 symmetry on the Fermi surface. Moreover, we demonstrate that this Fermi surface has C2 symmetry of the type produced by a uniaxial or anisotropic density-wave phase. This establishes the central role of C4 symmetry breaking in the Fermi surface reconstruction of YBa2Cu3O6+δ , and suggests a striking degree of universality among unconventional superconductors.

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Section: Discussionsupporting

confidence: 68%

Broken rotational symmetry on the Fermi surface of a high-Tc superconductor

et al. 2017

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“…We follow Harrison and Sebastian [41] and use the 2Q 1 and 2Q 2 vectors to connect pieces of the Fermi arcs, giving rise to a small pocket which may be the origin of the quantum oscillations with electronlike carriers. The recent observation of quantum oscillation and CDW in the Hg1201 compound found a pocket area that is larger than that of YBCO, while the CDW wave vector is shorter [42]. The trend supports this scenario.…”

supporting

confidence: 75%

Amperean Pairing and the Pseudogap Phase of Cuprate Superconductors

2014

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The enigmatic pseudogap phase in underdoped cuprate high-T c superconductors has long been recognized as a central puzzle of the T c problem. Recent data show that the pseudogap is likely a distinct phase, characterized by a medium range and quasistatic charge ordering. However, the origin of the ordering wave vector and the mechanism of the charge order is unknown. At the same time, earlier data show that precursive superconducting fluctuations are also associated with this phase. We propose that the pseudogap phase is a novel pairing state where electrons on the same side of the Fermi surface are paired, in strong contrast with conventional Bardeen-Cooper-Schrieffer theory which pairs electrons on opposite sides of the Fermi surface. In this state the Cooper pair carries a net momentum and belongs to a general class called pair density wave. The microscopic pairing mechanism comes from a gauge theory formulation of the resonating valence bond (RVB) picture, where spinons traveling in the same direction feel an attractive force in analogy with Ampere's effects in electromagnetism. We call this Amperean pairing.Charge order automatically appears as a subsidiary order parameter even when long-range pair order is destroyed by phase fluctuations. Our theory gives a prediction of the ordering wave vector which is in good agreement with experiment. Furthermore, the quasiparticle spectrum from our model explains many of the unusual features reported in photoemission experiments. The Fermi arc, the unusual way the tip of the arc terminates, and the relation of the spanning vector of the arc tips to the charge ordering wave vector also come out naturally. Finally, we propose an experiment that can directly test the notion of Amperean pairing. DOI: 10.1103/PhysRevX.4.031017 Subject Areas: Condensed Matter Physics, SuperconductivitySince the early days of cuprate superconductivity research, the pseudogap phase has been identified as a central piece of the high-T c puzzle [1]. The pseudogap opens below a temperature T Ã much above T c in underdoped cuprates, and it is visible in the spin susceptibility as detected by the Knight shift, in tunneling spectroscopy and in c-axis conductivity. Angle-resolved photoemission (ARPES) shows that the pseudogap opens in the antinodal region near ð0; πÞ (we set the lattice constant a to unity), leaving behind ungapped "Fermi arcs" centered around the nodes. Recent x-ray scattering data [2][3][4][5] reveal that the pseudogap is likely to be a distinct phase, characterized by the onset of a charge density wave (CDW) with wave vectors at ð0; AEδÞ and ðAEδ; 0Þ, where δ decreases with increasing doping, thus confirming evidence for charge order found earlier by scanning tunneling microscope (STM) [6][7][8][9] and nuclear magnetic resonance (NMR) experiments [10]. Recent advances include STM and x-ray studies on the same Bi 2 Sr 2 CaCu 2 O 8þx (Bi-2212) samples [11]. Other signatures include Kerr rotation [12], the emergence of anisotropy in the Nernst effect, etc. [13]. (Another set of exp...

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“…20 Moreover, the temperature dependence of the crossover field follows closely the one observed in NMR 3 and ultrasound 31 measurements. A commonly advocated scenario [43][44][45][46][47] for explaining recent quantum oscillations experiments, [48][49][50][51] invokes long-range CDW order as a cause for Fermisurface reconstruction. It is tempting to associate the above mentioned regime of enhanced CDW correlations with this scenario.…”

Section: Discussionmentioning

confidence: 99%

Long-range order and pinning of charge-density waves in competition with superconductivity

Caplan¹,

Wachtel²,

Orgad³

2015

Phys. Rev. B

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Recent experiments show that charge-density wave correlations are prevalent in underdoped cuprate superconductors. The correlations are short-ranged at weak magnetic fields but their intensity and spatial extent increase rapidly at low temperatures beyond a crossover field. Here we consider the possibility of long-range charge-density wave order in a model of a layered system where such order competes with superconductivity. We show that in the clean limit, low-temperature longrange order is stabilized by arbitrarily weak magnetic fields. This apparent discrepancy with the experiments is resolved by the presence of disorder. Like the field, disorder nucleates halos of chargedensity wave, but unlike the former it also disrupts inter-halo coherence, leading to a correlation length that is always finite. Our results are compatible with various experimental trends, including the onset of longer range correlations induced by inter-layer coupling above a characteristic field scale.

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Universal quantum oscillations in the underdoped cuprate superconductors

Cited by 152 publications

References 32 publications

Broken rotational symmetry on the Fermi surface of a high-Tc superconductor

Broken rotational symmetry on the Fermi surface of a high-Tc superconductor

Amperean Pairing and the Pseudogap Phase of Cuprate Superconductors

Long-range order and pinning of charge-density waves in competition with superconductivity

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