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VOLUME 58 (1993) | ISSUE 6 |
PAGE 457
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Superconductivity with lines of GAP nodes: density of states in the vortex
Volovik G. E.
The density of states (DOS) produced by the vortices in the superconductors with the lines of zeros in the electronic energy spectrum is calculated with application to high-temperature superconductors. The DOS of the isolated vortex is κΝρξmm{R,X}, where NF is the DOS of the normal metal, ξ is the coherence length, A is the penetration depth, and R is the distance between the vortices. Only a small part of the DOS results from the fermions which are localized in the vortex core. The symmetry of the isolated vortex line in superconductors in which the gap corresponds to the Г3 representation is discussed.
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