Publication
Time Reversal Breaking States and Spontaneous Current Pattern in Josephson Junctions of D-Wave Superconductors
The time-reversal symmetry (Τ) breaking on surfaces and interfaces of superconductors with d-wave orbital pairing has been intensively investigated in last years both in theory and experiment (see reviews [1, 2]). Several mechanisms of Τ-breaking and corresponding spontaneous currents generation have been proposed and studied, particularly: the appearance of a subdominant order parameter and the proximity effect. The latter case is realized, in particular, at the interface of two d-wave superconductors with different lattice axes orientation (Josephson d-d junction). In the present paper, we consider the generation of spontaneous currents and obtain the pattern of current distribution in the ballistic point d-d junction.