Superconductivity without inversion and time-reversal symmetries
Superconductivity
2018-10-17 v1
Abstract
The traditional symmetries that protect superconductivity are time-reversal and inversion. Here, we examine the minimal symmetries protecting superconductivity in two dimensions and find that time-reversal symmetry and inversion symmetry are not required, and having a combination of either symmetry with a mirror operation on the basal plane is sufficient. We classify superconducting states stabilized by these two symmetries, when time-reversal and inversion symmetries are not present, and provide realistic minimal models as examples. Interestingly, several experimentally realized systems, such as transition metal dichalcogenides and the two-dimensional Rashba system belong to this category, when subject to an applied magnetic field.
Cite
@article{arxiv.1803.06504,
title = {Superconductivity without inversion and time-reversal symmetries},
author = {Mark H Fischer and Manfred Sigrist and Daniel F Agterberg},
journal= {arXiv preprint arXiv:1803.06504},
year = {2018}
}