Speaker
Aline Ramires
(Paul Scherrer Insitute)
Description
The generalization of the notion of nonunitary superconductivity to complex materials with multiple internal degrees of freedom (such as orbitals, sublattices, or layers) opens multiple possibilities. Focusing on d-electron systems with two orbitals, we can address a variety of complex quantum materials and discuss the consequences for the superconducting spectra. In particular, gap openings of band crossings at finite energies can be attributed to a nonunitary order parameter if this is associated with a finite superconducting fitness measure. We speculate that nonunitary superconductivity in complex quantum materials is very common and can be associated with multiple cases of time-reversal symmetry breaking superconductors.
Author
Aline Ramires
(Paul Scherrer Insitute)