A charge of 2e is transferred across the boundary between one of these materials and a normal state material in Andreev reflection.
The Beechgard salt is an organic CT complex that behaves like one of these materials. A charge of 2e is transferred across the boundary between one of these materials and a normal state material in Andreev reflection. These materials contain Abrikosov vortices with a size close to their (*) coherence length. Depending on their number of critical fields, they can be classified as type I or type II. The magnetic field is expelled during the transition to becoming one of these materials in the Meissner effect. For 10 points, name these materials with no resistance.
The Beechgard salt is an organic CT complex that behaves like one of these materials.
superconductors [or superconductivity]