Unified Description of the Mid Gap States in Inhomogeneous Superconductors

Yoji Ohashi, Satoshi Takada

研究成果: Article査読

19 被引用数 (Scopus)

抄録

Condition for the mid gap state to exist in inhomogeneous superconductor is investigated. On the basis of the Andreev equations, a general expression of the wavefunction of this bound state is derived. Then, the mid gap state is shown to exist only if signs of the pair potential is different, which an quasiparticle feels in the initial and final states in the scattering process described by the Andreev equations. It is also studied why some inhomogeneous systems have no mid gap state. Our results present a unified picture that the absence of the mid gap states results from their hybridization due to the spatial variation of the order parameter and the presence of the normal reflection.

本文言語English
ページ(範囲)246-254
ページ数9
ジャーナルJournal of the Physical Society of Japan
65
1
DOI
出版ステータスPublished - 1996 1月 1
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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