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Title: Broken time-reversal symmetry in Josephson junction involving two-band superconductors
Authors: Ng, Tai-Kai
Nagaosa, Naoto
Keywords: Phenomenological theories
Theories and models of superconducting state
Proximity effects
Andreev effect
SN and SNS junctions
Issue Date: Jul-2009
Citation: Europhysics letters, v. 87, no. 1, 17003, July 2009
Abstract: A novel time-reversal symmetry breaking state is found theoretically in the Josephson junction between a two-gap superconductor and a conventional s-wave superconductor. This occurs as a result of frustration between the three order parameters analogous to two antiferromagnetically coupled XY-spins put under a magnetic field. This leads to formation of interface states with energies inside the superconducting gap and modified flux quantization condition for a ring composed of the two types of superconductors.
Rights: Europhysics letters © copyright (2009) IOP Publishing Ltd. The Journal's web site is located at
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