Physik | Kolloquien

Physikalisches Kolloquium: Inversion a key symmetry for superconductors

Wann
Dienstag, 9. Januar 2024
15:15 bis 16:45 Uhr

Wo
P 603 - Anschluss Getränke und Snacks

Veranstaltet von
FB Physik: Gastgeber Prof. Belzig / Organisation Prof. Bechinger

Vortragende Person/Vortragende Personen:
Prof. Dr. Manfred Sigrist / ETH Zürich

For superconductivity the fundamental symmetries inversion and time reversal play a pivotal role in
the formation of coherent states of Cooper pairs. The phenomenology of a superconductor is
profoundly modified by the absence of at least one of the two symmetries within a material. We
focus on how the lack of inversion symmetry influences the structure of Cooper pairs and yields
intricate properties in these so called non centrosymmetric superconductors. Some of these
features cascade even into crystalline materials with inversion centers, which however contain
coupled non centrosymmetric subunits, leading to the class of “locally noncentrosymmetric
superconductors”.
Both kinds of superconductors display particularly intriguing properties in the presence of magnetic
fields and add a fascinating chapter to the book of unconventional superconductivity.