ZhETF, Vol. 129,
p. 742 (April 2006)
(English translation - JETP,
Vol. 102, No. 4,
available online at www.springer.com
TWO-DIMENSIONAL S-N-S JUNCTION WITH THE RASHBA SPIN-ORBIT INTERACTION
Dimitrova O., Feigel'man M.V.
Received: November 1, 2005
PACS: 74.50.+r, 74.25.Sv, 71.70.Ej
The effect of Rashba spin-orbit interaction on the supercurrent in S - 2DEG - S proximity junctions is investigated in the clean limit. A generalization of Beenakker's formula for Andreev levels to the case of spin-orbit scattering is presented. Spin-orbit-induced splitting of Andreev bound states is predicted for an infinite-width junction with nonvanishing normal backscattering at S-N interfaces. However, a semiclassical average of the Josephson current is insensitive to the Rashba coupling as long as the electron-electron interaction in 2DEG is neglected.