An experimental condensed matter physicist who coauthored a phase-sensitive test of d-wave superconductivity using a tricrystal ring. A ring containing three grain-boundary Josephson junctions exhibited spontaneous half-quantum magnetic flux, while two-junction control rings did not. The geometry converts a sign change of the pairing order parameter into a measurable magnetic signal.[ref]
Pairing symmetry and flux quantization in a tricrystal superconducting ring by C. C. Tsuei and others. Abstract: three-junction ring, two-junction controls and half-flux observation
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