Symmetry breaking is a central concept of physics for which superconductivity provides a paradigm.
In a conventional superconductor, gauge symmetry is broken. Unconventional superfluids and superconductors can break other symmetries as well. The ISIS theory group carries out research in this area both independently and in close collaboration with experimentalists. Topics include noncentrosymmetric superconductors, high-temperature superconductors and superconductivity at complex interfaces.
A. D. Hillier, J. Quintanilla, and R. Cywinksi, Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC2, Phys. Rev. Lett. 102, 117007 (2009).
J. Quintanilla, K. Capelle, L.N. Oliveira, Density-functional description of superconducting and magnetic proximity effects across a tunneling barrier, Phys. Rev. B 78, 205426 (2008).