6 papers
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 resilie…
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…
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…
Topological Kondo semimetal and insulator in AB-stacked heterobilayer transition metal dichalcogenides
Daniele Guerci, Kevin P. Lucht, Valentin Crépel +4
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…
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…
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…