Abstract
In the vortex-liquid state in YBa2Cu3O7 there exist two distinct dissipative states separated by a field Hk. Below Hk, the resistivity is strongly field activated, with a prefactor that is anomalously enhanced over the normal-state resistivity N by 12 orders of magnitude. At Hk, the prefactor collapses to a temperature-independent value equal to N, and the vortex motion becomes diffusive. The existence of the Hk boundary is also reflected in the anomalous behavior of the Hall resistivity.
Original language | English (US) |
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Pages (from-to) | 3075-3078 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 66 |
Issue number | 23 |
DOIs | |
State | Published - 1991 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy