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Physics 1, 6 (2008) – Published July 23, 2008 Quantum Mechanics Semiconductor Physics Electrons in graphene can be described by the relativistic Dirac equation for massless fermions and exhibit a host of unusual properties. The surfaces of certain band insulators—called topological insulators—can be described in a similar way, leading to an exotic metallic surface on an otherwise “ordinary” insulator. |
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