| Autor: |
Eltsev, Yuri, Rapp, Östen |
| Zdroj: |
Journal of Low Temperature Physics; Dec1999, Vol. 117 Issue 5/6, p1393-1397, 5p |
| Abstrakt: |
Melting transition of a flux line lattice// ab -planes has been studied in twinned YBa2 Cu3 O7−δ single crystals using transport measurements along the c -axis. In contrast to previously studied geometry with field and current in planes (W.K. Kwok et al., Phys. Rev. Lett. 72 , 1088 (1994)), a step-like c -axis resistive transition has been found for exact field alignment along ab -planes. The angular dependence of ρc with rotation of the crystal around the c -axis was studied. The results show that below the resistive step, the pinning force is anomalously increased when the field is aligned along ac ( bc )-crystal facets. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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