Quasiparticle density of states in a half metal in the presence of odd-frequency Cooper pairs

Yasuhiro Asano, Takehito Yokoyama, Yukio Tanaka, Alexandre Avraamovitch Golubov

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Abstract

We study the local density of states in a half metal sandwiched by the two superconductors. The spin-flip scattering at the junction interface opens the Josephson channels of the odd-frequency spin-triplet s-wave Cooper pairs. The penetration of the odd-frequency pairs enhances the quasiparticle density of states near the Fermi energy in a half metal, which is responsible for the unusual nonmonotonic temperature dependence of the Josephson current. On the basis of calculated results, we propose experiments to confirm the odd-frequency Cooper pairs.
Original languageUndefined
Pages (from-to)1023-1025
JournalPhysica Status Solidi A: Applied research
Volume205
Issue number5
DOIs
Publication statusPublished - 2008

Keywords

  • IR-72562

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