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29 March 2024
 
  » arxiv » cond-mat/0101353

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Ginzburg-Landau theory for the time-dependent phase field in a two-dimensional d-wave superconductor
Sergei G. Sharapov ; Hans Beck ; Vadim M. Loktev ;
Date 23 Dec 2000
Journal Physica C. 364-365 (2001) 437
Subject Superconductivity | cond-mat.supr-con
AbstractWe derive a finite temperature time-dependent effective theory for the phase $ heta$ of the pairing field, which is appropriate for a 2D conducting electron system with non-retarded d-wave attraction. As for s-wave pairing the effective action contains terms with Landau damping, but their structure appears to be different from the s-wave case due to the fact that the Landau damping is determined by the quasiparticle group velocity $v_g$, which for the d-wave pairing does not have the same direction as the non-interacting Fermi velocity $v_F$. We show that for the d-wave pairing the Landau terms have a linear low temperature dependence and in contrast to the s-wave case are important for all finite temperatures.
Source arXiv, cond-mat/0101353
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