Fractional vortices on grain boundaries --- the case for broken time reversal symmetry in high temperature superconductors
arXiv:cond-mat/9611069 · doi:10.1103/PhysRevB.55.15239
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.
9 pages, RevTeX, 5 postscript figures included