Regensburg 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 78: Correlated Electrons: Poster Session

TT 78.1: Poster

Donnerstag, 10. März 2016, 15:00–18:30, Poster D

CT-QMC-simulations on the single impurity Anderson model with a superconducting bath — •Florian Sohn and Thomas Pruschke — Institut für theoretische Physik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen

Coupling a heavy fermion impurity to a superconducting lead induces a competition between the Kondo effect and superconductivity in the low temperature regime. This situation has been modeled with a single impurity Anderson model, where the normal state bath is replaced by a BCS-type superconducting bath in mean field approximation. We study this model using a continuous-time quantum Monte Carlo hybridization expansion algorithm. Results include the impurity Green’s functions as well as the corresponding spectral functions obtained from analytic continuation. Two side bands are observed which we discuss in the light of Yu-Shiba-Rusinov states [1-3]. We gratefully acknowledge financial support by the DFG project PR293/13-1.
Y. Luh, Acta Phys. Sin. 21, 75 (1965)
H. Shiba, Prog. Theor. Phys. 40, 435 (1968)
A. I. Rusinov, Sov. Phys. JETP 29, 1101 (1969)