Joule heating generated by spin current through Josephson junctions

S. Takahashi; T. Yamashita; Tomio Koyama; S. Maekawa; H. Imamura

doi:10.1063/1.1357860

Joule heating generated by spin current through Josephson junctions

S. Takahashi, T. Yamashita, Tomio Koyama, S. Maekawa, H. Imamura

Materials Property Division

Research output: Contribution to journal › Conference article › peer-review

9 Citations (Scopus)

Abstract

We theoretically study the spin-polarized current flowing through a Josephson junction (JJ) in a spin injection device. When the spin-polarized current is injected from a ferromagnet in a superconductor (SC), the charge current is carried by the superconducting condensate (Cooper pairs), while the spin-up and spin-down currents flow in equal magnitude but in the opposite direction in a SC, because of no quasiparticle charge current in the SC. This indicates that not only the Josephson current but also the spin current flow across JJ at zero bias voltage, thereby generating Joule heating by the spin current. The result provides a new method for detecting the spin current by measuring Joule heating at JJ.

Original language	English
Pages (from-to)	7505-7507
Number of pages	3
Journal	Journal of Applied Physics
Volume	89
Issue number	11 II
DOIs	https://doi.org/10.1063/1.1357860
Publication status	Published - 2001 Jun 1
Event	8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.1357860

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title = "Joule heating generated by spin current through Josephson junctions",

abstract = "We theoretically study the spin-polarized current flowing through a Josephson junction (JJ) in a spin injection device. When the spin-polarized current is injected from a ferromagnet in a superconductor (SC), the charge current is carried by the superconducting condensate (Cooper pairs), while the spin-up and spin-down currents flow in equal magnitude but in the opposite direction in a SC, because of no quasiparticle charge current in the SC. This indicates that not only the Josephson current but also the spin current flow across JJ at zero bias voltage, thereby generating Joule heating by the spin current. The result provides a new method for detecting the spin current by measuring Joule heating at JJ.",

author = "S. Takahashi and T. Yamashita and Tomio Koyama and S. Maekawa and H. Imamura",

note = "Copyright: Copyright 2005 Elsevier Science B.V., Amsterdam. All rights reserved.; 8th Joint Magnetism and Magnetic Materials-Intermag Conference ; Conference date: 07-01-2001 Through 11-01-2001",

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TY - JOUR

T1 - Joule heating generated by spin current through Josephson junctions

AU - Takahashi, S.

AU - Yamashita, T.

AU - Koyama, Tomio

AU - Maekawa, S.

AU - Imamura, H.

PY - 2001/6/1

Y1 - 2001/6/1

N2 - We theoretically study the spin-polarized current flowing through a Josephson junction (JJ) in a spin injection device. When the spin-polarized current is injected from a ferromagnet in a superconductor (SC), the charge current is carried by the superconducting condensate (Cooper pairs), while the spin-up and spin-down currents flow in equal magnitude but in the opposite direction in a SC, because of no quasiparticle charge current in the SC. This indicates that not only the Josephson current but also the spin current flow across JJ at zero bias voltage, thereby generating Joule heating by the spin current. The result provides a new method for detecting the spin current by measuring Joule heating at JJ.

AB - We theoretically study the spin-polarized current flowing through a Josephson junction (JJ) in a spin injection device. When the spin-polarized current is injected from a ferromagnet in a superconductor (SC), the charge current is carried by the superconducting condensate (Cooper pairs), while the spin-up and spin-down currents flow in equal magnitude but in the opposite direction in a SC, because of no quasiparticle charge current in the SC. This indicates that not only the Josephson current but also the spin current flow across JJ at zero bias voltage, thereby generating Joule heating by the spin current. The result provides a new method for detecting the spin current by measuring Joule heating at JJ.

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DO - 10.1063/1.1357860

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SN - 0021-8979

VL - 89

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 11 II

T2 - 8th Joint Magnetism and Magnetic Materials-Intermag Conference

Y2 - 7 January 2001 through 11 January 2001

ER -

Joule heating generated by spin current through Josephson junctions

Abstract

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