Tunnel junctions of unconventional superconductors
C. Bruder, A. van Otterlo, G. T. Zimanyi
DOI 10.1103/PhysRevB.51.12904 · Physical Review B
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Abstract
The phenomenology of Josephson tunnel junctions between unconventional superconductors is developed further. In contrast to s-wave superconductors, for d-wave superconductors the direction dependence of the tunnel matrix elements that describe the barrier is relevant. We find the full I-V characteristics and comment on the thermodynamical properties of these junctions. They depend sensitively on the relative orientation of the superconductors. The I-V characteristics differ from the normal s-wave resistively-shunted-junction-like behavior.
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