Owing to its hexagonal lattice structure with a diatomic unit ... at energies ±ℏv F |G|/2 given by the reciprocal superlattice vectors G(refs 2, 3), where v F is the Fermi velocity.

Some of the most promising materials for future technologies come in layers just one atom thick, such as graphene, a sheet of carbon atoms arranged in a hexagonal lattice, prized for its exceptional ...

By finely varying a magnetic field applied perpendicularly to the thin plate, the researchers were able to induce a transformation between the square lattice of merons-antimerons and a hexagonal ...