Effects of periodic kicking on dispersion and wave packet dynamics in graphene

Article

关键词: FLOQUET TOPOLOGICAL INSULATORS;    ELECTRONIC-PROPERTIES;    DRIVEN SYSTEMS;    LOCALIZATION;    TRANSITION;    TRANSPORT;    FERMIONS;    STATES;   

DOI  :  10.1103/PhysRevB.93.174301

来源: SCIE

【 摘 要 】

We study the effects of delta-function periodic kicks on the Floquet energy-momentum dispersion in graphene. We find that a rich variety of dispersions can appear depending on the parameters of the kicking: at certain points in the Brillouin zone, the dispersion can become linear but anisotropic, linear in one direction and quadratic in the perpendicular direction, gapped with a quadratic dispersion, or completely flat (called dynamical localization). We show all these results analytically and demonstrate them numerically through the dynamics of wave packets propagating in graphene. We propose experimental methods for producing these effects.

【 授权许可】

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