Scientists detect unusual 'quasiparticles' in tri-layer graphene

(PhysOrg.com) -- By studying three layers of graphene -- sheets of honeycomb-arrayed carbon atoms -- stacked in a particular way, scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have discovered a “little universe” populated by a new kind of “quasiparticles” -- particle-like excitations of electric charge. Unlike massless photon-like quasiparticles in single-layer graphene, these new quasiparticles have mass, which depends on their energy (or velocity), and would become infinitely massive at rest.

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