Model for a metal-insulator transition in antidot arrays induced by an external driving field

Article

关键词: MAGNETIC-FIELD;    DYNAMIC LOCALIZATION;    CLASSICAL CHAOS;    BLOCH ELECTRONS;    STOCHASTIC WEB;    QUANTUM CHAOS;    DIFFUSION;    SYSTEMS;    SURFACE;   

DOI  :  10.1103/PhysRevB.61.2085

来源: SCIE

【 摘 要 】

It is shown that a family of models associated with the kicked Harper model is relevant for cyclotron resonance experiments in an antidot array. For this purpose a simplified model for electronic motion in a related model system in the presence of a magnetic field and an ac electric field is developed. In the limit of a strong magnetic field it reduces to a model similar to the kicked Harper model. This model is studied numerically and is found to be extremely sensitive to the strength of the electric field. In particular, as the strength of the electric field is varied a metal-insulator transition may be found. The experimental conditions required for this transition are discussed.

【 授权许可】

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