Gravitational effects on the magnetic attenuation of superconductors

Abstract

It is found that when gravitational effects are taken into account, the two historical independent traditional hallmarks of ideal superconductors---perfect conductivity (\ensuremath{\sigma}) and perfect diamagnetism characterized by zero permeability (\ensuremath{\mu})---are actually related to each other in terms of a theoretical \ensuremath{\sigma}-\ensuremath{\mu} model developed in this paper. Our result suggests a possible importance of gravitational effects in understanding superconductivity.