Semiconductor moiré materials

KF Mak, J Shan - Nature Nanotechnology, 2022 - nature.com
Moiré materials have emerged as a platform for exploring the physics of strong electronic
correlations and non-trivial band topology. Here we review the recent progress in …

High-order Van Hove singularities and their connection to flat bands

L Classen, JJ Betouras - Annual Review of Condensed Matter …, 2024 - annualreviews.org
The flattening of single-particle band structures plays an important role in the quest for novel
quantum states of matter owing to the crucial role of interactions. Recent advances in theory …

Composite Fermi Liquid at Zero Magnetic Field in Twisted

J Dong, J Wang, PJ Ledwith, A Vishwanath… - Physical Review Letters, 2023 - APS
The pursuit of exotic phases of matter outside of the extreme conditions of a quantizing
magnetic field is a long-standing quest of solid state physics. Recent experiments have …

Anomalous Hall metal and fractional Chern insulator in twisted transition metal dichalcogenides

V Crépel, L Fu - Physical Review B, 2023 - APS
We predict robust Ising ferromagnetism driven by Coulomb interaction in the metallic phase
of twisted transition metal dichalcogenide homobilayers for a range of small twist angles …

Topological and stacked flat bands in bilayer graphene with a superlattice potential

SAA Ghorashi, A Dunbrack, A Abouelkomsan, J Sun… - Physical Review Letters, 2023 - APS
We show that bilayer graphene in the presence of a 2D superlattice potential provides a
highly tunable setup that can realize a variety of flat band phenomena. We focus on two …

Bridging the small and large in twisted transition metal dichalcogenide homobilayers: A tight binding model capturing orbital interference and topology across a wide …

V Crépel, A Millis - Physical Review Research, 2024 - APS
Many of the important phases observed in twisted transition metal dichalcogenide
homobilayers are driven by short-range interactions, which should be captured by a local …

Topological superconductivity with mixed singlet-triplet pairing in moiré transition metal dichalcogenide bilayers

W Akbar, A Biborski, L Rademaker, M Zegrodnik - Physical Review B, 2024 - APS
We investigate strong coupling topological superconductivity in twisted moiré bilayer WSe 2.
Our approach is based on an effective tJ model with displacement-field-dependent complex …

Chiral Kondo lattice in doped MoTe2/WSe2 bilayers

D Guerci, J Wang, J Zang, J Cano, JH Pixley… - Science …, 2023 - science.org
We theoretically study the interplay between magnetism and a heavy Fermi liquid in the AB-
stacked transition metal dichalcogenide bilayer system, MoTe2/WSe2, in the regime in …

Multilayer graphene with a superlattice potential

SAA Ghorashi, J Cano - Physical Review B, 2023 - APS
Bernal stacked bilayer graphene subject to a superlattice potential can realize topological
and stacked flat bands [Ghorashi, Phys. Rev. Lett. 130, 196201 (2023) …

Mixed singlet-triplet superconducting state within the moiré model applied to twisted bilayer

M Zegrodnik, A Biborski - Physical Review B, 2023 - APS
We analyze an analog of the tJU model as applied to the description of a single moiré flat
band of twisted WSe 2 bilayer. To take into account the correlation effects induced by a …