Fractional Vortices as Evidence of Time-Reversal Symmetry Breaking in High-Temperature Superconductors
M. Sigrist, D. B. Bailey, R. B. Laughlin
Abstract
We argue that recent experiments by Kirtley et al. may show evidence of time reversal symmetry breaking in YBCO at crystal grain boundaries. We illustrate this through a Ginzburg-Landau model calculation. Further experimental tests are proposed.
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