Transition from activated to diffusive behavior in the vortex-liquid state in YBa2Cu3O7

T. R. Chien, T. W. Jing, Nai Phuan Ong, Z. Z. Wang

Research output: Contribution to journalArticlepeer-review

144 Scopus citations

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 languageEnglish (US)
Pages (from-to)3075-3078
Number of pages4
JournalPhysical Review Letters
Volume66
Issue number23
DOIs
StatePublished - Jan 1 1991

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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