We discuss methods for calculating Chern numbers of two-dimensional lattice systems using spiral boundary conditions which sweep all lattice sites in one-dimensional order. Specifically, we establish ...
MIT physicists have taken a key step toward solving the puzzle of what leads electrons to split into fractions of themselves. Their solution sheds light on the conditions that give rise to exotic ...
Graphene is a two-dimensional material consisting of a single layer of carbon atoms arranged in a honeycomb structure. Its properties include high strength and good conductivity of heat and ...