Singularity of the vortex density of states in d-wave superconductors

  • N. B. Kopnin
  • G. E. Volovik
Condensed Matter

Abstract

In d-wave superconductors, the electronic density of states (DOS) induced by a vortex exhibits a divergence at low energies: Nvortex(E) ∼1/|E|. This divergence is the result of gap nodes in the spectrum of excitation outside the vortex core. The heat capacity in two regimes, T2/T c 2 B/B c 2 and T2/T c 2 B/B c 2, is discussed.

PACS numbers

74.20.−z 74.72.−h 

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Copyright information

© MAIK "Nauka/Interperiodica" 1996

Authors and Affiliations

  • N. B. Kopnin
    • 1
    • 2
  • G. E. Volovik
    • 1
    • 2
  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyEspooFinland
  2. 2.L. D. Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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