Photoinduced valley currents in strained graphene

Article

关键词: MOS2;    POLARIZATION;    GRAPHITE;    GAP;   

DOI  :  10.1103/PhysRevB.90.075406

来源: SCIE

【 摘 要 】

The theoretical results are presented showing that strain-induced anisotropy of graphene spectrum gives rise to the valley currents under the illumination by normally incident light. The currents of the two graphene valleys are mutually compensated providing zero net electric current. The magnitude and direction of the valley currents are determined by the parameters of strain and light polarization. For not too high photon energy strain-induced valley current exceeds that due to intrinsic warping of the graphene spectrum which suggests feasibility of strain-mediated valleytronics.

【 授权许可】

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