Superconductivity in single- and multi-band Hubbard models: can we optimise them?

MPSD Seminar

  • Datum: 22.06.2018
  • Uhrzeit: 11:00 - 12:00
  • Vortragende(r): Hideo Aoki
  • University of Tokyo, & AIST, Tsukuba, Japan
  • Ort: CFEL (Bldg. 99)
  • Raum: Seminar Room I-II, EG.076-078
  • Gastgeber: Andrea Cavalleri
Superconductivity in single- and multi-band Hubbard models: can we optimise them?
We can capture various unconventional high-Tc superconductors basically either with single-band models or multiband ones. We can theoretically explore how we can optimise them for higher Tc's. There, "multiband" should not be confused with "multiorbital" systems, for which I shall compare merits and demerits of the two classes from both quantum many-body algorithms and materials-science points of view. For the former, I shall mention the dynamical vertex approximation to fathom the correlation between the electronic structure and the superconductivity and to search for enhanced Tc's. For the latter, I shall present various ideas that include "flat-band" superconductivity.
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