Theoretical Prediction of the Fractional ac Josephson Effect in p- and d-Wave Superconductors

Hyok Jon Kwon, K. Sengupta, Victor M. Yakovenko

Research output: Contribution to journalArticlepeer-review

Abstract

For certain orientations of Josephson junctions between two p x-wave or two d-wave superconductors, the sub-gap Andreev states produce a 4π-periodic relation between the Josephson current/and the phase difference φ:I ∝ sin(φ/2). Consequently, the ac Josephson current has the fractional frequency eV/hℏ, where V is the dc voltage. In the tunneling limit, the Josephson current is proportional to the first power (not square) of the electron tunneling amplitude. Thus, the Josephson current is carried by single electrons, rather than by Cooper pairs.

Original languageEnglish (US)
Pages (from-to)653-658
Number of pages6
JournalBrazilian Journal of Physics
Volume33
Issue number4 SPEC. ISS.
DOIs
StatePublished - Dec 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Theoretical Prediction of the Fractional ac Josephson Effect in p- and d-Wave Superconductors'. Together they form a unique fingerprint.

Cite this