title: Unconventional surface impedance of a normal-metal film covering a spin-triplet superconductor due to odd-frequency cooper pairs.
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.
authors.affiliation: Department of Applied Physics and Center for Topological Science & Technology, Hokkaido University, Sapporo 060-8628, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Asano
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Golubov
authors.forename: Yakov V
authors.initials: YV
authors.lastname: Fominov
authors.forename: Yukio
authors.initials: Y
authors.lastname: Tanaka