Variety of c-Axis collective excitations in layered multigap superconductors

Yukihiro Ota, Masahiko Machida, Tomio Koyama

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We present a dynamical theory for the phase differences along a stacked direction of intrinsic Josephson junctions (IJJ's) in layered multigap superconductors, motivated by the discovery of highly anisotropic iron-based superconductors with thick perovskite-type blocking layers. The dynamical equations describing ac and dc intrinsic Josephson effects peculiar to multigap IJJ's are derived, and collective Leggett mode excitations in addition to the Josephson plasma established in single-gap IJJ's are predicted. The dispersion relations of their collective modes are explicitly displayed, and the remarkable peculiarity of the Leggett mode is demonstrated.

本文言語English
論文番号157001
ジャーナルPhysical review letters
106
15
DOI
出版ステータスPublished - 2011 4 11
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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