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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 | Abstract: | We 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 | Services: | Forum | Review | PDF | Favorites |
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