| Autor: |
R I, Miller, R F, Kiefl, J H, Brewer, J E, Sonier, J, Chakhalian, S, Dunsiger, G D, Morris, A N, Price, D A, Bonn, W H, Hardy, R, Liang |
| Rok vydání: |
2001 |
| Zdroj: |
Physical review letters. 88(13) |
| ISSN: |
0031-9007 |
| Popis: |
Evidence for static alternating magnetic fields in the vortex cores of underdoped YBa2Cu3O6+x is reported. Muon spin rotation measurements of the internal magnetic field distribution of the vortex state of YBa2Cu3O6.50 in applied fields of H = 1 T and H = 4 T reveal a feature in the high-field tail of the field distribution which is not present in optimally doped YBa2Cu3O6.95 and which fits well to a model with static magnetic fields in the vortex cores. The magnitude of the fields is estimated to be 18(2) G and decreases above T = 10 K. We discuss possible origins of the additional vortex core magnetism within the context of existing theories. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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