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 …

Superconductivity in twisted bilayer WSe2

Y **a, Z Han, K Watanabe, T Taniguchi, J Shan… - Nature, 2024 - nature.com
Moiré materials have enabled the realization of flat electron bands and quantum phases that
are driven by the strong correlations associated with flat bands,,–. Superconductivity has …

Superconductivity in 5.0° twisted bilayer WSe2

Y Guo, J Pack, J Swann, L Holtzman, M Cothrine… - Nature, 2025 - nature.com
The discovery of superconductivity in twisted bilayer and trilayer graphene,,,–has generated
tremendous interest. The key feature of these systems is an interplay between interlayer …

Theory of correlated insulators and superconductor at ν = 1 in twisted WSe2

S Kim, JF Mendez-Valderrama, X Wang… - Nature …, 2025 - nature.com
The observation of a superconducting phase, an intertwined insulating phase, and a
continuous transition between the two at a commensurate filling of ν= 1 in bilayers of twisted …

Pair-density-wave and chiral superconductivity in twisted bilayer transition metal dichalcogenides

YM Wu, Z Wu, H Yao - Physical Review Letters, 2023 - APS
We theoretically explore possible orders induced by weak repulsive interactions in twisted
bilayer transition metal dichalcogenides (eg, WSe 2) in the presence of an out-of-plane …

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 …

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 …

Orbital Fulde-Ferrell pairing state in moiré Ising superconductors

YM **e, KT Law - Physical Review Letters, 2023 - APS
In this Letter, we study superconducting moiré homobilayer transition metal dichalcogenides
where the Ising spin-orbit coupling (SOC) is much larger than the moiré bandwidth. We call …

Competition between d-wave superconductivity and magnetism in uniaxially strained Sr2RuO4

JB Profe, S Beck, DM Kennes, A Georges… - npj Quantum …, 2024 - nature.com
The pairing symmetry of Sr2RuO4 is a long-standing fundamental question in the physics of
superconducting materials with strong electronic correlations. We use the functional …

Collective Charge Excitations between Moiré Minibands in Twisted Bilayers Probed with Resonant Inelastic Light Scattering

N Saigal, L Klebl, H Lambers, S Bahmanyar, V Antić… - Physical Review Letters, 2024 - APS
We establish low-temperature resonant inelastic light scattering (RILS) spectroscopy as a
tool to probe the formation of a series of moiré bands in twisted WSe 2 bilayers by accessing …