VeranstaltungenDetails

Vortragende Person/Vortragende Personen:
Elio König Max Planck Institut für Festkörperforschung Stuttgart

The patterns of self-organization in complex quantum systems are central to quantum

many-body physics. Specifically, quantum order in the absence of symmetry breaking, in

particular highly entangled topologically ordered states, describes fundamentally distinct

phases of matter that are of great interest both in present-day solid state research and in

quantum information science. In this talk, I will spend some time reviewing the concepts of

topological and non-symmetry broken quantum order and relate to quantum spin liquid

states discussed in the context of quantum materials. I will then focus on the interplay of

such exotic states with gapless fermions, i.e., metals, as is of relevance to

heterostructures of van der Waals materials. Specifically I will discuss signatures of

quantum spin liquids "sandwich" heterostructures. I will also discuss bulk 4Hb-TaS2, which

was promoted as a candidate material for alternating QSL and metallic layers (a "mille-

feuille") and attempt to provide theoretical insight into its unconventional superconducting

properties, in particular its enigmatic magnetic memory.