Tuning of dynamic localization in coupled minibands: signatures of a field induced insulator-metal transition
Abstract
We follow the evolution of dressed coupled mini-bands as a function of an AC field intensity, non perturbatively, for a wide field frequency range. High and low frequency limits are characterized by two different dynamic localization regimes, clearly separated by a breakdown region in a quasi-energy map. Signatures of a insulator-metal like transition by means of a field induced suppression of a Peierls-like instability are identified.
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