Layer Pseudospin Magnetism in Transition-Metal-Dichalcogenide Double-Moirés

Abstract

Spontaneous order of layer pseudospins in two-dimensional bilayers is common in quantum Hall systems, where it is responsible for hysteretic responses to gate fields in states with Ising order, and giant drag voltages in states with XY (spontaneous inter-layer phase coherence) order. In this article we predict that layer pseudospin order will also occur in double-moiré strongly correlated two-dimensional electron systems. We comment on similarities and differences in the competition between the two types of order in quantum Hall and double-moiré systems, and relate our findings to previous work on Falicov-Kimball models of electronic ferroelectrics.

13 pages, 4 figures

References in corpus (11)

• Tunable bilayer Hubbard model physics in twisted WSe2
• Hartree-Fock study of the moiré Hubbard model for twisted bilayer transition metal dichalcogenides
• Correlated interlayer exciton insulator in double layers of monolayer WSe2 and moiré WS2/WSe2
• The phase diagram of the antiferromagnetic XXZ model on the triangular lattice
• SU(4) chiral spin liquid, exciton supersolid and electric detection in moiré bilayers
• Quantum phases of hardcore bosons with long-range interactions on a square lattice
• Non-local interactions in moiré Hubbard systems
• Hartree-Fock study of electronic ferroelectricity in the Falicov-Kimball model with $f$-$f$ hopping
• Competing magnetic states in transition metal dichalcogenide moiré materials
• Biconical structures in two-dimensional anisotropic Heisenberg antiferromagnets
• Dipolar excitonic insulator in a moire lattice

Cited by in corpus (2)

• Exciton density waves in Coulomb-coupled dual moiré lattices
• Keldysh field theory of dynamical exciton condensation transitions in nonequilibrium electron-hole bilayers