Polarization effects induced by a magnetic field in intrinsically granular superconductors |
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Authors: | S Sergeenkov |
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Institution: | 1.Instituto Superior Técnico,Centro de Fìsica das Interac??es Fundamentais,Lisboa,Portugal;2.Laboratory of Theoretical Physics, Joint Institute for Nuclear Research,Dubna, Moscow oblast,Russia |
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Abstract: | Based on the previously suggested model of nanoscale dislocation-induced Josephson junctions and their arrays, we study the magnetic-field-induced electric polarization effects in intrinsically granular superconductors. In addition to the new phenomenon of chemomagnetoelectricity, the model also predicts a few other interesting effects, including charge analogs of Meissner paramagnetism (at low fields) and a “fishtail” anomaly (at high fields). The conditions under which these effects can be experimentally measured in nonstoichiometric high-Tc superconductors are discussed. |
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