Fakultät für Physik und Astronomie

Extra Seminar - Würzburg ToCoTronics Colloquium

"Magic Lorenz ratios and Anderson orthogonality catastrophe in out-of-equilibrium quantum simulators"
Datum: 15.05.2024, 12:15 - 14:00 Uhr
Kategorie: Kolloquium
Ort: Hubland Süd, Geb. M1 (Informatik / Physik), SE M1.03.020
Veranstalter: SFB 1170 ToCoTronics
Vortragende:r: Mikhail Kiselev - ICTP Trieste

We show that the transport integrals of the two-site charge Kondo circuits connecting various multichannel Kondo simulators satisfy the generalized Wiedemann - Franz law with the universal Lorenz ratios all greater than 1. The magic Lorenz ratios are directly related to the Anderson's orthogonality catastrophe in quantum simulators providing some
additional universal measure for the strong electron-electron correlations. We present a fully fledged theory for the magic Lorenzratios and discuss possible routes for the experimental verifications of the theory.

Ref: M. Kiselev, PHYSICAL REVIEW B 108, L081108 (2023)