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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
名前 / ファイル | ライセンス | Actions | |
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item type | Journal Article(1) | |||||
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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× Tachiki, Masashi |
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著者別名 |
小泉, 裕康
× 小泉, 裕康 |
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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 |
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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 |