Abstract
In high T c superconductors grain boundary junctions are important as weak links, and can be used to construct superconducting rings exhibiting half-integer flux quantisation. We investigate supercurrent flow in such junctions for both s-wave and d-wave pairing scenarios. We show that the supercurrent is an approximately sawtooth function of the order parameter phase difference and that the critical current is smaller for d-wave than s-wave pairing for the same interface geometry. We also investigate the occurrence of π-junction behaviour and the origin of halfinteger flux quantisation.
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© 1999 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
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Annett, J.F., Hogan O’Neill, J.J., Martin, A.M. (1999). Junctions and interfaces in D-wave superconductors. In: Kramer, B. (eds) Advances in Solid State Physics 39. Advances in Solid State Physics, vol 39. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0107497
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DOI: https://doi.org/10.1007/BFb0107497
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