Forced entanglement vs anisotropic dissipation in a vortex line liquid

D. López, L. Krusin-Elbaum, H. Safar, V. M. Vinokur, A. D. Marwick, J. Z. Sun, C. Feild

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

We present evidence for forced topological entanglement of line-like vortices in the liquid regime of YBa2Cu3O7−δ with columnar defects. By splaying the defects within a fixed plane (in-fan) we create a c^– axis phase coherent vortex (string) structure which correlates with anisotropic dissipation. The high-field vortex motion is “easy” in fan and “hard” across fan in crystals–a signature of forced entanglement by a small angle splay. The high-field anisotropy is surprisingly reversed in thin films, where forced entanglement is absent.

Original languageEnglish (US)
Pages (from-to)4258-4261
Number of pages4
JournalPhysical review letters
Volume79
Issue number21
DOIs
StatePublished - Nov 24 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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