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Journal of Low Temperature Physics

, Volume 95, Issue 1–2, pp 353–363 | Cite as

Vortex lattice melting, pinning and kinetics

  • S. Doniach
  • Seungoh Ryu
  • A. Kapitulnik
Vortices/Ginzburg-Landau

Abstract

The phenomenology of the high Tc superconductors is discussed both at the level of the thermodynamics of melting of the Abrikosov flux lattice and in terms of the melting and kinetics of the flux lattice for a pinned system. We review results on 3D melting obtained by a Monte Carlo simulation approach in which the 2D “pancake” vortices are treated as statistical variables. We discuss pinning in the context of the strong pinning regime in which the vortex density given in terms of the applied field B is small compared to that represented by an effective field Bpin measuring the pinning center density. We introduce a new criterion for the unfreezing of a vortex glass on increase of magnetic field or temperature, in the strong pinning, small field limit. We model this limit in terms of a single flux line interacting with a columnar pin. This model is studied both analytically and by computer simulation. By applying a tilt potential, we study the kinetics of the vortex motion in an external current and show that the resulting current-voltage characteristic follows a basic vortex glass-like scaling relation in the vicinity of the depinning transition.

Keywords

Vortex Scaling Relation Vortex Motion Vortex Lattice Flux Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • S. Doniach
    • 1
  • Seungoh Ryu
    • 1
  • A. Kapitulnik
    • 1
  1. 1.Department of Applied PhysicsStanford UniversityStanford

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