Seminar Talk of Dr. Krzysztof Wójcik (Institute of Molecular Physics Polish Academy of Science)

Hybrid (P1-O2-323, Zoom Access via Moodle) The phase diagram of the conventional 2-impurity Kondo model and its relevance to correlated lattice models have been a subject of a long debate. It is now clear [...] specially designed counter-term. I will present results obtained for a different extension of the standard 2-impurity model, where each of the impurities is coupled to a different host, and the hosts (not impurities) [...] second QPT occurs upon tuning the same inter-host coupling to very high values, where the system forms 2-impurity version of a spin-liquid. I will discuss the possibilities for realization of this scenario …