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

T. R. Chien, T. W. Jing, N. P. Ong, Z. Z. Wang

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)1791-1792
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume185-189
Issue numberPART 3
DOIs
StatePublished - 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

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