5 papers
Metastable magnetic domains and the anomalous resistance peak in twisted double bilayer graphene
Zhenxiang Gao, Christopher Coleman, Silvia Lüscher +7
In graphene moirés, valley polarization gives rise to orbital magnetism, manifested as an anomalous Hall effect and resulting in Barkhausen jumps in longitudinal resistance when ch…
Signatures of a ferro-Josephson effect in twisted graphene
Ruiheng Su, Zhenxiang Gao, Christopher Coleman +9
When a spin-polarized current is driven across a magnetic domain wall, the resulting spin-transfer torque may, beyond a critical threshold, set the wall's moments into precession.…
Interplay of electronic crystals with integer and fractional Chern insulators in moiré pentalayer graphene
Dacen Waters, Anna Okounkova, Ruiheng Su +8
The rapid development of moiré quantum matter has recently led to the remarkable discovery of the fractional quantum anomalous Hall effect, and sparked predictions of other novel c…
Topological electronic crystals in twisted bilayer-trilayer graphene
Ruiheng Su, Dacen Waters, Boran Zhou +5
In a dilute two-dimensional electron gas, Coulomb interactions can stabilize the formation of a Wigner crystal. Although Wigner crystals are topologically trivial, it has been pred…
Topological flat bands in a family of multilayer graphene moiré lattices
Dacen Waters, Ruiheng Su, Ellis Thompson +10
Moiré materials host a wealth of intertwined correlated and topological states of matter, all arising from flat electronic bands with nontrivial quantum geometry. A prominent examp…