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19941996
most citedFractional vortices on grain boundaries --- the case for broken time reversal symmetry in high temperature superconductors

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cond-mat1994

Fractional Vortices as Evidence of Time-Reversal Symmetry Breaking in High-Temperature Superconductors

M. Sigrist, D. B. Bailey, R. B. Laughlin

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-L…