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  1. 計算科学研究センター (Center for Computational Sciences)
  2. 小泉 裕康 (Koizumi Hiroyasu)
  1. コンテンツタイプ (Contents Type)
  2. 雑誌発表論文等 (Journal article, etc.)
  3. J~
  4. Journal of superconductivity and novel magnetism

Supercurrent Generation by Spin-twisting Itinerant Motion of Electrons: Re-derivation of the ac Josephson Effect Including the Current Flow Through the Leads Connected to Josephson Junction

http://hdl.handle.net/2241/00124222
148a6554-9fc6-42f4-9996-f4c761c5800e
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JSNM_28-1.pdf JSNM_28-1 (664.4 kB)
item type Journal Article(1)
公開日 2015-04-09
タイトル
タイトル Supercurrent Generation by Spin-twisting Itinerant Motion of Electrons: Re-derivation of the ac Josephson Effect Including the Current Flow Through the Leads Connected to Josephson Junction
言語
言語 eng
資源タイプ
タイプ journal article
著者 Koizumi, Hiroyasu

× Koizumi, Hiroyasu

WEKO 113232

Koizumi, Hiroyasu

Search repository
Tachiki, Masashi

× Tachiki, Masashi

WEKO 113233

Tachiki, Masashi

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著者別名 小泉, 裕康

× 小泉, 裕康

WEKO 204265
e-Rad 60240959
筑波大学研究者総覧 0000000777

小泉, 裕康

Search repository
抄録
内容記述 Based on a new supercurrent generation mechanism proposed for the cuprate superconductivity (as reported by Koizumi (J. Supercond. Nov. Magn. 24:1997, 2011); Hidekata and Koizumi (J. Supercond. Nov. Magn. 24:2253, 2011); Koizumi et al. (J. Supercond. Nov. Magn. 27:121, 2014); Koizumi et al. (J. Supercond. Nov. Magn. 2014), we re-derive the ac Josephson effect including the current flow through the leads connected to the Josephson junction and the impressed electromotive force. It is noted that the actual experimental boundary condition where the Josephson frequency 2e V 0/h (h is Planck’s constant, e is the absolute value of electron charge, and V 0 is the dc voltage across the Josephson junction) is measured differently from the one assumed by Josephson, and 2e V 0/h is obtained by the electron tunneling instead of the Cooper pair tunneling. It is also indicated that the standard textbook description for the Josephson relation, “if a dc voltage V 0 is applied, the time-variation of ϕ occurs” (as reported by Feynman et al. (1965); Ashcroft and Mermin (1976); Kittel (1986); Tinkham (1996) (ϕ is related to the tunneling current as J s = J c sinϕ) should be rephrased, “if the time-variation of ϕ is introduced, a voltage difference V 0 appears.” We show that by adding the Rashba spin-orbit interaction to the Bardeen, Cooper, and Schrieffer (BCS) Hamiltonian, the spin-twisting itinerant motion of electrons is stabilized in the BCS superconductors; thus, it is suggested that the present, new supercurrent generation mechanism is also relevant to the BCS superconductors, i.e., the true origin of the supercurrent generation in the BCS superconductors may also be the spin-twisting itinerant motion of electrons.
書誌情報 Journal of superconductivity and novel magnetism

巻 28, 号 1, p. 61-69, 発行日 2015-01
ISSN
収録物識別子 1557-1939
書誌レコードID
収録物識別子 AA12092103
DOI
関連識別子
関連識別子 10.1007/s10948-014-2877-5
権利
権利情報 © Springer Science+Business Media New York 2014. The final publication is available at link.springer.com
著者版フラグ
値 author
出版者
出版者 Springer US
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