PIRSA:22050045 Conference Condensed Matter

DOI10.48660/22050045

Conference/School: Quantum Criticality: Gauge Fields and Matter

Herbut, I. (2022). Multiband superconductivity and the breaking of time reversal symmetry. Perimeter Institute. https://pirsa.org/22050045

Herbut, Igor. Multiband superconductivity and the breaking of time reversal symmetry. Perimeter Institute, May. 19, 2022, https://pirsa.org/22050045 

@misc{ pirsa_PIRSA:22050045,
  doi = {10.48660/22050045},
  url = {https://pirsa.org/22050045},
  author = {Herbut, Igor},
  keywords = {Condensed Matter},
  language = {en},
  title = {Multiband superconductivity and the breaking of time reversal symmetry},
  publisher = {Perimeter Institute},
  year = {2022},
  month = {may},
  note = {PIRSA:22050045 see, \url{https://pirsa.org}}
}

Abstract

I will discuss how spontaneous breaking of time reversal symmetry in multiband superconductors leads quite generally to the formation of small Fermi surfaces of Bogoliubov excitations, irrespective of whether inversion symmetry is absent or present in the superconducting state. In the latter case the inversion symmetry is susceptible to being dynamical broken at low temperatures by the residual interactions. A lattice model of this process will be discussed. Its final result is a reduced, but still finite Bogoliubov-Fermi surface.

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