2012/06/23 by Anand Sharma, Valeri N. Kotov, Sharma, Anand +3
Physics and Astronomy · Materials Science · #Topological Materials and Phenomena #Graphene research and applications #Quantum and electron transport phenomena
paper · pdf · doi:10.48550/arxiv.1206.5427
We study the role of long-range electron-electron interactions in a system of\ntwo-dimensional anisotropic Dirac fermions, which naturally appear in\nuniaxially strained graphene, graphene in external potentials, some strongly\nanisotropic topological insulators, and engineered anisotropic graphene\nstructures. We find that while for small interactions and anisotropy the system\nrestores the conventional isotropic Dirac liquid behavior, strong enough\nanisotropy can lead to the formation of a quasi-one dimensional electronic\nphase with dominant charge order (anisotropic excitonic insulator).\n