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Metallic quantum criticality enabled by flat bands in a kagome lattice
Lei Chen, Fang Xie, Shouvik Sur +4
Strange metals arise in a variety of platforms for strongly correlated electrons, ranging from the cuprates, heavy fermions to flat band systems. Motivated by recent experiments in…
Altermagnetic Routes to Majorana Modes in Zero Net Magnetization
Sayed Ali Akbar Ghorashi, Taylor L. Hughes, Jennifer Cano
We propose heterostructures that realize first and second order topological superconductivity with vanishing net magnetization by utilizing altermagnetism. Such platforms may offer…
Signature of Correlated Insulator in Electric Field Controlled Superlattice
Jiacheng Sun, Sayed Ali Akbar Ghorashi, Kenji Watanabe +4
The Bloch electron energy spectrum of a crystalline solid is determined by the underlying lattice structure at the atomic level. In a 2-dimensional (2d) crystal it is possible to i…
Chiral model of twisted bilayer graphene realized in a monolayer
Valentin Crépel, Aaron Dunbrack, Daniele Guerci +2
We demonstrate that a single layer of graphene subject to a superlattice potential nearly commensurate to a supercell exactly maps to the chiral model of…
Pressure--enhanced fractional Chern insulators in moiré transition metal dichalcogenides along a magic line
Nicolás Morales-Durán, Jie Wang, Gabriel R. Schleder +5
We show that pressure applied to twisted WSe can enhance the many-body gap and region of stability of a fractional Chern insulator at filling . Our results are based on…
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…