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

D. Bailey·M. Sigrist·R. B. Laughlin
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Abstract

We discuss the problem of broken time reversal symmetry near grain boundaries in a d-wave superconductor based on a Ginzburg-Landau theory. It is shown that such a state can lead to fractional vortices on the grain boundary. Both analytical and numerical results show the structure of this type of state.

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D. Bailey, M. Sigrist, R. B. Laughlin. 1996-11-09. Fractional vortices on grain boundaries --- the case for broken time reversal symmetry in high temperature superconductors. https://doi.org/10.1103/physrevb.55.15239

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