SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 65: Many-body Physics
Q 65.6: Vortrag
Freitag, 10. März 2023, 12:15–12:30, F342
Charge pumping in the anomalous Floquet topological insulator with Falicov-Kimball interactions — •Arijit Dutta1, Tao Qin2, and Walter Hofstetter1 — 1Goethe-Universität Frankfurt, Institut für Theoretische Physik, Frankfurt, Germany — 2School of Physics and Optoelectronics Engineering, Anhui University, Hefei, Anhui Province 230601, People's Republic of China
The anomalous Floquet topological insulator (AFTI) is a unique phase found in periodically driven systems which hosts topological edge states even when the Chern number of the bulk band is zero. This results in quantized charge pumping in a nanoribbon geometry. Using Floquet-Keldysh DMFT we evaluate the efficiency of pumping in the AFTI phase in presence of Falicov-Kimball (FK) interaction and compare it with the corresponding results in the nonanomalous Floquet topological insulator - the so-called Haldane phase. We further discuss heating issues and relevance to experiments.