Parallel transport of electrons in graphene parallels gravity

Article

关键词: TOPOLOGICAL DEFECTS;    GRAPHITIC CONES;    DISLOCATIONS;    FIELD;    FERMIONS;    EQUATION;    CRYSTAL;    TORSION;    MOTION;    PHASES;   

DOI  :  10.1103/PhysRevB.82.073405

来源: SCIE

【 摘 要 】

Geometrically a crystal containing dislocations and disclinations can be envisaged as a fixed frame Cartan-Einstein space-time carrying torsion and curvature, respectively. We demonstrate that electrons in defected graphene are transported in the same way as fundamental Dirac fermions in a nontrivial 2+ 1-dimensional space-time, with the proviso that the graphene electrons remember the lattice constant through the valley quantum numbers. The extra valley holonomy corresponds to modified Euclidean symmetry generators.

【 授权许可】

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