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SYHS: Symposium Physics of van der Waals 2D Heterostructures

SYHS 1: Physics of van der Waals 2D Heterostructures

SYHS 1.2: Invited Talk

Friday, March 31, 2023, 10:00–10:30, HSZ 01

Interaction induced magnetism in 2D semiconductor moiré superlattices — •Xiaodong Xu — Department of Physics, Department of Materials Science and Engineering, University of Washington, Seattle, USA

Many-body interactions between carriers lie at the heart of correlated physics. The ability to tune such interactions would open the possibility to access and control complex electronic phase diagrams on demand. Recently, moiré superlattices formed by two-dimensional materials have emerged as a promising platform for quantum engineering such phenomena. In this talk, I will present a systematic study of the emergent magnetic interactions (both antiferromagnetic and ferromagnetic) in strongly correlated transition metal dichalcogenides moiré superlattices. I will show that the combination of doping, electric field, and optical excitation provide dynamic controls of the moiré many-body Hamiltonian.

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