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Quantum Phases of Transition Metal Dichalcogenide Moiré Systems

Cornell Affiliated Author(s)

Author

Y. Zhou
D.N. Sheng
Eun-Ah Kim

Abstract

Moiré systems provide a rich platform for studies of strong correlation physics. Recent experiments on heterobilayer transition metal dichalcogenide Moiré systems are exciting in that they manifest a relatively simple model system of an extended Hubbard model on a triangular lattice. Inspired by the prospect of the hetero-transition metal dichalcogenide Moiré system's potential as a solid-state-based quantum simulator, we explore the extended Hubbard model on the triangular lattice using the density matrix renormalization group. Specifically, we explore the two-dimensional phase space spanned by the key tuning parameters in the extended Hubbard model, namely, the kinetic energy strength and the further-range Coulomb interaction strengths. We find competition between Fermi fluid, chiral spin liquid, spin density wave, and charge order. In particular, our finding of the optimal further-range interaction for the chiral correlation presents a tantalizing possibility. © 2022 American Physical Society.

Date Published

Journal

Physical Review Letters

Volume

128

Issue

15

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128867309&doi=10.1103%2fPhysRevLett.128.157602&partnerID=40&md5=d354ed7c5d5a77fc3eb35999418785a5

DOI

10.1103/PhysRevLett.128.157602

Group (Lab)

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