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Direct numerical experiments for interlayer Josephson plasma and fluctuation of vortices in layered high-Tcsuperconductors

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
288
Identifiers
DOI: 10.1016/s0921-4534(97)01579-7
Keywords
  • Josephson Plasma
  • Numerical Simulation
  • Time-Dependent Ginzburg-Landau Equation
  • Bi2Sr2Cacu2O8
  • Flux Line Fluctuations
  • Vortex Lattice Melting
  • Vortex Glass

Abstract

Abstract We perform a direct numerical simulation solving the time-dependent Ginzburg-Landau equation in the presence of both thermal and quenched strong disorders (point pinning centers) in order to explain the temperature and magnetic field dependence of the collective Josephson plasma resonance frequency under the c-axis parallel magnetic field recently reported in highly anisotropic Bi 2Sr 2CaCu 2O 8 (Bi-2212). The temperature dependence of the plasma frequency ω c( T) similar to experimental results, and ω c 2( B) ∝ B − μ , μ ≈ 1 behavior observed in Bi-2212 are successfully obtained, and the relation between those behaviors and vortex states is clarified.

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