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Condensed Matter > Superconductivity

Title: Superconductivity without inversion and time-reversal symmetries

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.
Subjects: Superconductivity (cond-mat.supr-con)
Cite as: arXiv:1803.06504 [cond-mat.supr-con]
  (or arXiv:1803.06504v1 [cond-mat.supr-con] for this version)

Submission history

From: Mark H Fischer [view email]
[v1] Sat, 17 Mar 2018 13:44:31 GMT (282kb,D)