Spontaneous formation of a π soliton in a superconducting wire with an odd number of electrons

Hyok Jon Kwon, Victor M. Yakovenko

Research output: Contribution to journalArticlepeer-review

Abstract

Even-odd asymmetry was studied in a one-dimensional (1D) superconducting wire. Results showed that by creating a π soliton (kink) of the order parameter the 1D superconductor can lower its energy level with an odd number of electrons. If it is closed in a ring the phase difference on the two sides of the soliton will generate a supercurrent which is detectable by a SQUID. The two degenerate states with current flowing clockwise or counterclockwise can be utilized as a qubit.

Original languageEnglish (US)
Article number017002
Pages (from-to)170021-170024
Number of pages4
JournalPhysical review letters
Volume89
Issue number1
DOIs
StatePublished - Jul 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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