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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Manifestation of the odd-frequency spin-triplet pairing state in diffusive ferromagnet/superconductor junctions

http://hdl.handle.net/2237/8823
http://hdl.handle.net/2237/8823
5f43103f-bfb8-45f4-bc6f-271e70cd61fa
名前 / ファイル ライセンス アクション
PhysRevB_75-134510.pdf PhysRevB_75-134510.pdf (658.1 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-10-11
タイトル
タイトル Manifestation of the odd-frequency spin-triplet pairing state in diffusive ferromagnet/superconductor junctions
言語 en
著者 Yokoyama, T.

× Yokoyama, T.

WEKO 19331

en Yokoyama, T.

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Tanaka, Y.

× Tanaka, Y.

WEKO 19332

en Tanaka, Y.

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Golubov, A.A.

× Golubov, A.A.

WEKO 19333

en Golubov, A.A.

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright: American Physical Society, All rights reserved.
抄録
内容記述 Using the quasiclassical Green’s function formalism, we study the influence of the odd-frequency spin-triplet superconductivity on the local density of states (LDOS) in a diffusive ferromagnet (DF) attached to a superconductor. Various possible symmetry classes in a superconductor are considered which are consistent with the Pauli’s principle: even-frequency spin-singlet even-parity (ESE) state, even-frequency spin-triplet odd-parity (ETO) state, odd-frequency spin-triplet even-parity (OTE) state, and odd-frequency spin-singlet odd-parity (OSO) state. For each of these states, the pairing state in the DF is studied. Particular attention is paid to the study of spin-singlet s-wave and spin-triplet p-wave superconductors as the examples of ESE and ETO superconductors. For the spin-singlet case the magnitude of the OTE component of the pair amplitude is enhanced with the increase of the exchange field in the DF. When the OTE component is dominant at low energy, the resulting LDOS in the DF has a zero-energy peak (ZEP). On the other hand, in DF/spin-triplet p-wave superconductor junctions the LDOS has a ZEP in the absence of the exchange field, where only the OTE pairing state exists. With the increase of the exchange field, the ESE component of the pair amplitude induced in the DF is enhanced. Then, the resulting LDOS has a ZEP splitting. We demonstrate that the appearance of the dominant OTE component of the pair amplitude is the physical reason for the emergence of the ZEP of the LDOS.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevB.75.134510
ISSN
収録物識別子タイプ PISSN
収録物識別子 1098-0121
書誌情報 en : PHYSICAL REVIEW B

巻 75, 号 13, p. 134510-134510, 発行日 2007-04
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/8823
識別子タイプ HDL
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