Josephson Effect due to Odd-Frequency Pairts in Diffusive Half Metals

Yasuhiro Asano; Yukio Tanaka; Alexandre Avraamovitch Golubov

doi:10.1103/PhysRevLett.98.107002

Josephson Effect due to Odd-Frequency Pairts in Diffusive Half Metals

Yasuhiro Asano
, Yukio Tanaka
, Alexandre Avraamovitch Golubov

Faculty of Science and Technology

Research output: Contribution to journal › Article › Academic › peer-review

170 Citations (Scopus)

187 Downloads (Pure)

Abstract

Motivated by a recent experiment [Keizer et al., Nature (London) 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions using the recursive Green function method. The spin-flip scattering at the junction interfaces opens the Josephson channel of the odd-frequency spin-triplet Cooper pairs. As a consequence, the local density of states in a half metal has a large peak at the Fermi energy. Therefore the odd-frequency pairs can be detected experimentally by using the scanning tunneling spectroscopy.

Original language	Undefined
Pages (from-to)	107002-
Journal	Physical review letters
Volume	98
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.98.107002
Publication status	Published - 2007

Keywords

IR-59111
METIS-242657

Access to Document

10.1103/PhysRevLett.98.107002

josephson_effect

Cite this

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title = "Josephson Effect due to Odd-Frequency Pairts in Diffusive Half Metals",

abstract = "Motivated by a recent experiment [Keizer et al., Nature (London) 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions using the recursive Green function method. The spin-flip scattering at the junction interfaces opens the Josephson channel of the odd-frequency spin-triplet Cooper pairs. As a consequence, the local density of states in a half metal has a large peak at the Fermi energy. Therefore the odd-frequency pairs can be detected experimentally by using the scanning tunneling spectroscopy.",

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AU - Asano, Yasuhiro

AU - Tanaka, Yukio

AU - Golubov, Alexandre Avraamovitch

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Y1 - 2007

N2 - Motivated by a recent experiment [Keizer et al., Nature (London) 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions using the recursive Green function method. The spin-flip scattering at the junction interfaces opens the Josephson channel of the odd-frequency spin-triplet Cooper pairs. As a consequence, the local density of states in a half metal has a large peak at the Fermi energy. Therefore the odd-frequency pairs can be detected experimentally by using the scanning tunneling spectroscopy.

AB - Motivated by a recent experiment [Keizer et al., Nature (London) 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions using the recursive Green function method. The spin-flip scattering at the junction interfaces opens the Josephson channel of the odd-frequency spin-triplet Cooper pairs. As a consequence, the local density of states in a half metal has a large peak at the Fermi energy. Therefore the odd-frequency pairs can be detected experimentally by using the scanning tunneling spectroscopy.

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KW - METIS-242657

U2 - 10.1103/PhysRevLett.98.107002

DO - 10.1103/PhysRevLett.98.107002

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