Nonequilibrium dislocation dynamics and instability of driven vortex lattices in two dimensions

Igor Aronson, Stefan Scheidl

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We consider dislocations in a vortex lattice that is driven in a two-dimensional superconductor with random impurities. The structure and dynamics of dislocations are studied in this genuine nonequilibrium situation on the basis of a coarse-grained equation of motion for the displacement field. The presence of dislocations leads to a characteristic anisotropic distortion of the vortex density that is controlled by a Kardar-Parisi-Zhang nonlinearity in the coarse-grained equation of motion. This nonlinearity also implies a screening of the interaction between dislocations and thereby an instability of the vortex lattice to the proliferation of free dislocations.

Original languageEnglish (US)
Pages (from-to)14541-14547
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume58
Issue number21
DOIs
StatePublished - Jan 1 1998

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Vortex flow
vortices
Equations of motion
equations of motion
Superconducting materials
nonlinearity
Screening
Impurities
screening
impurities
interactions

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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Nonequilibrium dislocation dynamics and instability of driven vortex lattices in two dimensions. / Aronson, Igor; Scheidl, Stefan.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 58, No. 21, 01.01.1998, p. 14541-14547.

Research output: Contribution to journalArticle

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