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Josephson current through a precessing classical spin
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- Teber, S. (author)
- Universités Paris 6, 7 et CNRS, France ; CNRS and Université Joseph Fourier, France
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- Holmqvist, Cecilia (author)
- CNRS and Université Joseph Fourier, France ; Chalmers University of Technology,Chalmers tekniska högskola,Chalmers University of Technology
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- Houzetd, M. (author)
- INAC/SPSMS, France
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- (creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
- In: Physica. B, Condensed matter. - : Elsevier BV. - 0921-4526 .- 1873-2135. ; 404, s. 527-529
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A study of the dc Josephson current between two superconducting leads in the presence of a precessingclassical spin is presented. The precession gives rise to a time-dependent tunnel potential which notonly implies different tunneling probabilities for spin-up and spin-down quasiparticles, but introducesalso a time-dependent spin-flip term. We provide an exact general analytic solution for the out-of-equilibrium steady-state permanent current between two spin-singlet superconductors as a functionof the superconducting phase difference, the precession frequency and for arbitrary junction transparency.As an application we focus on the effects of the spin-flip term alone and show that the magnitude andnature of the Josephson current are indeed strongly affected by the precession of the classical spin.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Condensed Matter Physics
- Kondenserade materians fysik
- Josephson current
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- ref (subject category)
- art (subject category)
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