Multiquantum vortices in superconductors: Electronic and scanning tunneling microscopy spectra

S. M. M. Virtanen and M. M. Salomaa
Phys. Rev. B 60, 14581 – Published 1 December 1999
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Abstract

Superconducting quasiparticle excitation spectra are computed for m times quantized flux lines using a self-consistent Bogoliubov–de Gennes approach. We find m discrete branches of bound-state solutions in the spectrum, corresponding to different values of the quasiparticle angular momentum. Owing to the bound states, the scanning tunneling microscopy spectrum of the vortex is predicted to display m rows of peaks as a function of the distance from the vortex axis.

  • Received 27 August 1999

DOI:https://doi.org/10.1103/PhysRevB.60.14581

©1999 American Physical Society

Authors & Affiliations

S. M. M. Virtanen and M. M. Salomaa

  • Materials Physics Laboratory, Helsinki University of Technology, P. O. Box 2200 (Technical Physics), FIN-02015 HUT, Finland

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Vol. 60, Iss. 21 — 1 December 1999

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