4 citations · 6 across the 6 of their papers we have counts for
3 papers · 1 filter
Moiré Flat Bands in Twisted Double Bilayer Graphene
Fatemeh Haddadi, QuanSheng Wu, Alex J. Kruchkov +1
We investigate twisted double bilayer graphene (TDBG), a four-layer system composed of two AB-stacked graphene bilayers rotated with respect to each other by a small angle. Our ab…
Non-Hermitian Boundary Modes
Dan S. Borgnia, Alex Jura Kruchkov, Robert-Jan Slager
We consider conditions for the existence of boundary modes in non-Hermitian systems with edges of arbitrary co-dimension. Through a universal formulation of formation criteria for…
Magic Angle Hierarchy in Twisted Graphene Multilayers
Eslam Khalaf, Alex J. Kruchkov, Grigory Tarnopolsky +1
When two monolayers of graphene are stacked with a small relative twist angle, the resulting band structure exhibits a remarkably flat pair of bands at a sequence of 'magic angles'…