Kagome chiral spin liquid in transition metal dichalcogenide moiré bilayers

Johannes Motruk, Dario Rossi, Dmitry A. Abanin, Louk Rademaker

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

At n=3/4 filling of the moiré flat band, transition metal dichalcogenide (TMD) moiré bilayers will develop kagome charge order. We derive an effective spin model for the resulting localized spins and find that its further neighbor spin interactions can be much less suppressed than the corresponding electron hopping strength. Using density matrix renormalization group simulations, we study its phase diagram and, for realistic model parameters relevant for WSe2/WS2, we show that this material can realize the exotic chiral spin liquid phase and the highly debated kagome spin liquid. Our work thus demonstrates that the frustration and strong interactions present in TMD heterobilayers provide an exciting platform to study spin liquid physics.

Original languageEnglish (US)
Article numberL022049
JournalPhysical Review Research
Volume5
Issue number2
DOIs
StatePublished - Apr 2023
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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