| Autor: |
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 |
| Rok vydání: |
2007 |
| Zdroj: |
Physical review letters. 100(12) |
| ISSN: |
0031-9007 |
| Popis: |
The polar Kerr effect in the high-T_(c) 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 approximately 1 microrad 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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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