Speaker
Prof.
Kirill Samokhin
(Brock University)
Description
I will review several recent developments in the GL theory of superconductors and fermionic superfluids. In superconductors without inversion symmetry, first-order gradient terms known as the Lifshitz invariants appear in the GL functional in the presence of a magnetic field or even without any field, leading to a variety of novel nonuniform stable states. In multiband superconductors, the interband Cooper pairing terms in the GL energy can stabilize time reversal symmetry-breaking states. The FFLO superconductors conduct electric current in a way which is very different from the usual case and, in particular, may exhibit the "superconducting diode" effect, due to the presence of higher-order gradient terms in the GL energy.
Author
Prof.
Kirill Samokhin
(Brock University)