Polar Kerr-Effect Measurements of the High-Temperature YBa2Cu3O6+x Superconductor: Evidence for Broken Symmetry near the Pseudogap Temperature
Jing Xia, Elizabeth Schemm, G. Deutscher, S. A. Kivelson, D. A. Bonn, W. N. Hardy, R. Liang, W. Siemons, G. Koster, M. M. Fejer, A. Kapitulnik
DOI 10.1103/PhysRevLett.100.127002 · Physical Review Letters
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 polar Kerr effect in the high-Tc superconductor YBa2Cu3O6+x was measured at zero magnetic field with high precision using a cyogenic Sagnac fiber interferometer. We observed nonzero Kerr rotations of order ∼1 μrad appearing near the pseudogap temperature T* and marking what appears to be a true phase transition. Anomalous magnetic behavior in magnetic-field training of the effect suggests that time reversal symmetry is already broken above room temperature.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 59 | Pressure not reported | unknown |
| YBa2Cu3O6.67 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 65 | Pressure not reported | unknown |
| YBa2Cu3O6.75 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75 | Pressure not reported | unknown |
| YBa2Cu3O6.92 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
| YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | onset |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Kerr Effect from Diffractive Skew Scattering in Chiral px±ipy Superconductors
similarity 0.96Elio J. König & Alex Levchenko
Source status unknown — claims are unverified
Polar Kerr effect in multiband spin-orbit coupled superconductors
similarity 0.95Meghdad Yazdani-Hamid et al.
Source status unknown — claims are unverified
Electronic properties of emergent topological defects in chiral p-wave superconductivity
similarity 0.95L.-F. Zhang et al.
Source status unknown — claims are unverified
Symmetry analysis of odd- and even-frequency superconducting gap symmetries for time-reversal symmetric interactions
similarity 0.95R. Matthias Geilhufe & Alexander V. Balatsky
Source status unknown — claims are unverified
Fluctuation and strain effects in a chiral p-wave superconductor
similarity 0.95Mark H. Fischer & Erez Berg
Source status unknown — claims are unverified
Topological phase transitions in small mesoscopic chiral p-wave superconductors
similarity 0.95L.-F. Zhang et al.
Source status unknown — claims are unverified