Abstract
In the vortex-liquid state in YBa2Cu3O7, there exist two distinct dissipative states separated by a field H>k. Below Hk, the resistivity is strongly field-activated, with a prefactor that is anomalously enhanced over the normal-state resistivity ρ{variant}N by ≈12 orders of magnitude. At Hk, the prefactor collapses to a temperature-independent value equal to ρ{variant}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) | 1791-1792 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 185-189 |
Issue number | PART 3 |
DOIs | |
State | Published - Dec 1 1991 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering