An experimental condensed matter physicist who coauthored an early phase-sensitive test of the pairing state in a cuprate superconductor. Interference in devices joining the cuprate to lead tested a relative phase shift predicted by d-wave superconductivity. The original report discusses device asymmetry and trapped vortices, showing why several observations must be assessed together when inferring the pairing symmetry.[ref]
Experimental determination of the superconducting pairing state in YBCO by D. A. Wollman and others. Abstract: SQUID phase coherence, pi shift and experimental complications
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