Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 14: Superconductivity: Theory 1

TT 14.9: Vortrag

Montag, 16. März 2020, 17:30–17:45, HSZ 204

Unconventional superconductivity in non-centrosymmetric structures — •Tilman Schwemmer, Michael Klett, Domenico di Sante, Werner Hanke, and Ronny Thomale — Institut für Theoretische Physik und Astrophysik, Universität Würzburg

The pursuit of novel phases in correlated electron systems, such as possibly topological instances of unconventional superconductivity, must consider multiple energy scales including interaction strength, electronic band width, and, in particular, spin-orbit coupling (SOC). Furthermore the underlying crystal symmetries of a given system constrain the types of order that can be realized. While density functional theory and related ab initio techniques can provide a detailed description of a materials electronic structure that carefully accounts for the effects of SOC, it is necessary to additionally refine quantum many body techniques to study Fermi surface instabilities in the presence of SOC. Starting from a picture of itinerant electrons, we compute the effect of electronic correlations on the Fermi surface via renormalization group techniques. This allows us to study unconventional superconductivity arising from the interplay of SOC, Fermi surface topology, electronic correlations and crystal symmetries in real materials.

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