Collective modes in multiband superfluids and superconductors: Multiple dynamical classes

Yukihiro Ota, Masahiko Machida, Tomio Koyama, Hideo Aoki

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

One important way to characterize the states having a gauge symmetry spontaneously broken over multibands is to look at their collective excitation modes. We find that a three-band system has multiple Leggett modes with significantly different masses, which can be classified into different dynamical classes according to whether multiple interband Josephson currents add or cancel. This provides a way to dynamically characterize multiband superconductivity while the pairing symmetry is a static property.

Original languageEnglish
Article number060507
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number6
DOIs
Publication statusPublished - 2011 Feb 11

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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