The possibility of a metal insulator transition in antidot arrays induced by an external driving

Details The possibility of a metal insulator transition in antidot arrays induced by an external driving The possibility of a metal insulator transition in antidot arrays induced by an external driving

1999-08-13

arxiv.org/abs/cond-mat/9908194v1

Physics

Condensed Matter

6 files: kharp.tex, fig1.ps fig2.ps fi3.ps fig4.ps fig5.ps

Scientific paper

10.1103/PhysRevB.61.2085

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 presence of a magnetic field and an AC electric field is developed. In the limit of 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.

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