| Autor: |
K, Kakuyanagi, K, Kumagai, Y, Matsuda, M, Hasegawa |
| Rok vydání: |
2002 |
| Zdroj: |
Physical review letters. 90(19) |
| ISSN: |
0031-9007 |
| Popis: |
Spatially resolved NMR is used to probe the magnetism in and around vortex cores of nearly optimally doped Tl(2)Ba(2)CuO(6+delta) (T(c)=85 K). The NMR relaxation rate T(-1)1 at the 205Tl site provides direct evidence that the antiferromagnetic (AF) spin correlation is significantly enhanced in the vortex core region. In the core region Cu spins show a local AF ordering with moments parallel to the layers at T(N)=20 K. Above T(N) the core region is in the paramagnetic state which is a reminiscence of the state above the pseudogap temperature (T(*) approximately 120 K), indicating that the pseudogap disappears within cores. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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