Spin Hall reduction of Josephson effect in InAs two-dimensional electrons



One of the mechanisms to cause the Josephson effect between two superconductors through a normal conductor is virtual traversal of electrons and holes through Andreev bound states. The spin Hall effect, on the other hand, disturbs the formation of Cooper pairs at the interfaces through the discrimination of up and down spins. We have found that the Josephson effect is strongly suppressed with the spin Hall effect caused by an electric current crossing transversally through the normal strip. This result proposes a spintronic control of the Josephson effect in superconducting devices. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)