= D. A. Wollman
{c}
{tag=Physicist}
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.<Experimental determination of the superconducting pairing state in YBCO by D. A. Wollman and others>[Abstract: SQUID phase coherence, pi shift and experimental complications]{ref}
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