Andreev-type states induced by quantum confinement

A. A. Shanenko, M. D. Croitoru, R. G. Mints, F. M. Peeters

Research output: Contribution to journalArticlepeer-review

Abstract

The properties of a clean superconductor with nanoscale dimensions are governed by quantum confinement of the electrons. This results in a spatially inhomogeneous superconducting condensate and in the formation of new Andreev-type quasiparticle states. These states are mainly located beyond regions where the superconducting condensate is enhanced. A numerical self-consistent solution of the Bogoliubov-de Gennes equations for a cylindrical metallic nanowire shows that these new Andreev-type states decrease the ratio of the energy gap to the critical temperature.

Original languageEnglish
Pages (from-to)611-615
Number of pages5
JournalJournal of Surface Investigation
Volume2
Issue number4
DOIs
StatePublished - Aug 2008

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