Nernst effect in the cuprate superconductor YBa2Cu3Oy: Broken rotational and translational symmetries
J. Chang, Nicolas Doiron-Leyraud, Francis Laliberté, R. Daou, David LeBoeuf, B. J. Ramshaw, Ruixing Liang, D. A. Bonn, W. N. Hardy, Cyril Proust, I. Sheikin, K. Behnia, Louis Taillefer
DOI 10.1103/PhysRevB.84.014507 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The Nernst coefficient of the cuprate superconductor YBa2Cu3Oy was recently shown to become strongly anisotropic within the basal plane when cooled below the pseudogap temperature T⋆, revealing that the pseudogap phase breaks the fourfold rotational symmetry of the CuO2 planes. Here we report on the evolution of this Nernst anisotropy at low temperature, once superconductivity is suppressed by a magnetic field. We find that the anisotropy drops rapidly below 80 K, to vanish in the T=0 limit. We show that this loss of anisotropy is due to the emergence of a small high-mobility electronlike pocket in the Fermi surface at low temperature, a reconstruction attributed to a low-temperature state that breaks the translational symmetry of the CuO2 planes. We discuss the sequence of broken symmetries—first rotational, then translational—in terms of an electronic nematic-to-smectic transition such as could arise when unidirectional spin or charge modulations order. We compare YBa2Cu3Oy with iron-pnictide superconductors where the process of (unidirectional) antiferromagnetic ordering gives rises to the same sequence of broken symmetries.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 66 | Pressure not reported | unknown |
Similar papers
Pseudogap temperature T* of cuprate superconductors from the Nernst effect
similarity 0.96O. Cyr-Choinière et al.
Source status unknown — claims are unverified
No Nematicity at the Onset Temperature of the Pseudogap Phase in the Cuprate Superconductor YBa2Cu3Oy
similarity 0.94G. Grissonnanche et al.
Source status unknown — claims are unverified
Effect of transition-metal elements on the superconductivity of Y-Ba-Cu-O
similarity 0.93Gang Xiao et al.
Source status unknown — claims are unverified
Two types of nematicity in the phase diagram of the cuprate superconductor YBa2Cu3Oy
similarity 0.93O. Cyr-Choinière et al.
Source status unknown — claims are unverified
Broader perspective on the high-temperature superconducting YBa2Cu3Oy system: The real role of the oxygen content
similarity 0.92Y. Tokura et al.
Source status unknown — claims are unverified
Thermal conductivity and electrical resistivity of the Y- and Er-substituted 1:2:3 superconducting compounds in the vicinity of the transition temperature
similarity 0.92B. M. Suleiman et al.
Source status unknown — claims are unverified