Anomalous Josephson Effect in Junctions with Rashba Spin-Orbit Coupling

We study two-dimensional double-barrier SINIS Josephson junctions in which the inversion symmetry in the normal part is broken by Rashba spin-orbit coupling. In the presence of a suitably oriented Zeeman field in the normal part, the system displays the anomalous Josephson effect: the current is nonzero even at zero phase difference between two superconductors.\footnote{A. Buzdin, Phys. Rev. Lett. \textbf{101}, 107005 (2008).} We investigate this effect by means of the Ginzburg-Landau formalism and microscopic Green's functions approach in the clean limit.