386 citations · 712 across the 14 of their papers we have counts for
14 papers
Topological Kondo semimetal and insulator in AB-stacked heterobilayer transition metal dichalcogenides
Daniele Guerci, Kevin P. Lucht, Valentin Crépel +3
Recent experiments reported the realization of a heavy Fermi liquid in AB-stacked MoTe/WSe heterobilayers. In this paper we show that the AB-stacked heterobilayer configura…
Spinon pairing induced by chiral in-plane exchange and the stabilization of odd-spin Chern number spin liquid in twisted
Valentin Crépel, Andrew Millis
The unusual structure and symmetry of low-energy states in twisted transition metal dichalcogenides leads to large in-plane spin-exchange interactions between spin-valley locked ho…
Efficient prediction of superlattice and anomalous miniband topology from quantum geometry
Valentin Crépel, Jennifer Cano
Two dimensional materials subject to long-wavelength modulations have emerged as novel platforms to study topological and correlated quantum phases. In this article, we develop a v…
Bridging the small and large in twisted transition metal dicalcogenide homobilayers: a tight binding model capturing orbital interference and topology across a wide range of twist angles
Valentin Crépel, Andrew Millis
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 tight bind…
Topologically protected flatness in chiral moiré heterostructures
Valentin Crépel, Peize Ding, Nishchhal Verma +2
The observation of delicate correlated phases in twisted heterostructures of graphene and transition metal dichalcogenides suggests that moiré flat bands are intrinsically resilien…
Attractive Haldane bilayers for trapping non-Abelian anyons
Valentin Crépel, Nicolas Regnault
We study the interplay between intrinsic topological order and superconductivity in a two-component Haldane bilayer, where the two layers are coupled by an attractive force. We obt…
Sublattice structure and topology in spontaneously crystallized electronic states
Yongxin Zeng, Daniele Guerci, Valentin Crépel +2
The prediction and realization of the quantum anomalous Hall effect are often intimately connected to honeycomb lattices in which the sublattice degree of freedom plays a central r…
Keldysh field theory of dynamical exciton condensation transitions in nonequilibrium electron-hole bilayers
Yongxin Zeng, Valentin Crépel, Andrew J. Millis
Recent experiments have realized steady-state electrical injection of interlayer excitons in electron-hole bilayers subject to a large bias voltage. In the ideal case in which inte…
Topological superconductivity in doped magnetic moiré semiconductors
Valentin Crépel, Daniele Guerci, Jennifer Cano +2
We show that topological superconductivity may emerge upon doping of transition metal dichalcogenide heterobilayers above an integer-filling magnetic state of the topmost valence m…
Ideal Chern bands are Landau levels in curved space
B. Estienne, N. Regnault, V. Crépel
We prove that all the criteria proposed in the literature to identify a Chern band hosting exact fractional Chern insulating ground states, in fact, describe an equivalence with a…
Dimer states of Rydberg atoms on the Kagome lattice as resources for universal measurement-based quantum computation
Valentin Crépel
We show that the quantum dimer state on the Kagome lattice, which was recently realized with high fidelity in a Rydberg quantum simulator [Semeghini et al., Science 374, 6572 (2021…
Magic in twisted transition metal dichalcogenide bilayers
Trithep Devakul, Valentin Crépel, Yang Zhang +1
The long wavelength moiré superlattices in twisted 2D structures have emerged as a highly tunable platform for strongly correlated electron physics. We study the moiré bands in twi…
Spin-triplet superconductivity from interband effect in doped insulators
Valentin Crépel, Liang Fu
Despite being of fundamental importance and potential interest for topological quantum computing, spin-triplet superconductors remain rare in solid state materials after decades of…
New mechanism and exact theory of superconductivity from strong repulsive interaction
Valentin Crépel, Liang Fu
We introduce a new and general mechanism for superconductivity in Fermi systems with strong repulsive interaction. Because kinetic terms are small compared to the bare repulsion, t…