Year: 1997
Type: article
Abstract: We demonstrate that superclean $d$-wave superconductors with ${\ensuremath{\Delta}}_{\ensuremath{\infty}}^{2}\ensuremath{\tau}/{E}_{F}\ensuremath{\gg}1$ display a novel type of vortex dynamics: At low temperatures, both dissipative and transverse components of the flux-flow conductivity are found to approach universal values even in the limit of infinite relaxation time. A finite dissipation in the superclean limit is explained in terms of the Landau damping on zero-frequency vortex modes which appear due to minigap nodes in the bound-state spectrum in the vortex core. In the moderately clean regime the scaling law at low $T$ and low field is obtained.
Source: Physical Review Letters
Authors: N. B. Kopnin, G. E. Volovik
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1987470537