Supercurrent rectification with time-reversal symmetry broken multiband superconductors
Yuriy Yerin, Stefan‐Ludwig Drechsler, A. A. Varlamov, Mario Cuoco, Francesco Giazotto
Abstract
Multiband superconductors with nontrivial interband phase relation between the order parameters can break time-reversal symmetry. The authors show here that a nonreciprocal supercurrent can arise in Josephson junctions linking conventional single-band and multiband superconductors with broken time-reversal symmetry, and the supercurrent rectification can be manipulated by the interband phase difference and the strength of the interband scattering. For a junction with three-band superconductors, the interband phase frustration leads to a hexagonal pattern of nodal lines in the profile of the rectification, where the amplitude drops to zero.
Topics & Concepts
SupercurrentRectificationSuperconductivitySymmetry (geometry)T-symmetryPhysicsCondensed matter physicsQuantum mechanicsMathematicsJosephson effectGeometryPower (physics)Physics of Superconductivity and MagnetismSuperconductivity in MgB2 and AlloysIron-based superconductors research