Unconventional Surface Impedance of a Normal-Metal Film Covering a Spin-Triplet Superconductor Due to Odd-Frequency Cooper Pairs

Yasuhiro Asano, Alexandre Avraamovitch Golubov, I.V. Fominov, Yakov V. Fominov, Yukio Tanaka

Research output: Contribution to journalArticleAcademicpeer-review

62 Citations (Scopus)

Abstract

We discuss the dynamic response of odd-frequency Cooper pairs to an electromagnetic field. By using the quasiclassical Green function method, we calculate the impedance (Z=R−iX) of a normal-metal thin film which covers a superconductor. In contrast with the standard relation (i.e., R≪X), the impedance in spin-triplet proximity structures shows anomalous behavior (i.e., R>X) in the low frequency limit. This unusual relation is a result of the penetration of odd-frequency pairs into the normal metal and reflects the negative Cooper pair density.
Original languageEnglish
Article number087001
Pages (from-to)-
Number of pages4
JournalPhysical review letters
Volume107
Issue number8
DOIs
Publication statusPublished - 2011

Keywords

  • METIS-280331
  • IR-104387

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