Josephson current through a precessing classical spin
Paper i proceeding, 2009

A study of the dc Josephson current between two superconducting leads in the presence of a precessing classical spin is presented. The precession gives rise to a time-dependent tunnel potential which not only implies different tunneling probabilities for spin-up and spin-down quasiparticles, but introduces also 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 function of 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 and nature of the Josephson current are indeed strongly affected by the precession of the classical spin.

Josephson current

Författare

Sofian Teber

Cecilia Holmqvist

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Manuel Houzet

Denis Feinberg

Mikael Fogelström

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Physica B: Condensed Matter

Vol. 404 527-

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