The electrostatic mechanism of Abrikosov vortex pinning at charged point defects and edge dislocations in high Tc superconductors

摘要: The electrostatic mechanism of flux pinning at point defects and dislocations is discussed. essence this that the transition from normal to superconducting state Cooper pair creation results in reduction static electron polarizability metal, with consequence shielding charged decreases, radius increases, absolute value negative energy electrons charge field reduces; i.e. full S-phase higher than N-phase. critical current determined by has been estimated reach 10-6 A cm2 for high Tc superconductors, which agrees experimental epitaxial quasi-single crystal films.