Anomalous properties of high-Tc superconductors with twins
Gurevich A. Vl., Mints R. G.
Twins are shown to initiate in the superconductors the formation of metastable domains whose order-parameter phases diifer by π. This situation gives rise to an incomplete Meissner effect, a reduction of the critical current and a nonexponential temperature dependence of the electronic specific heat.