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Type: Artigo de periódico
Title: Evolution of dynamic localization regimes in coupled minibands
Author: Rivera, P. H.
Schulz, P. A.
Abstract: We consider the behaviour of two coupled symmetric electronic minibands in the presence of an AC intense field. Symmetric coupled minibands are realized as dimerization procedures. The minibands are emulated by a tight-binding finite chain, whereas the interaction with an AC field is described by a time-independent Hamiltonian. We follow the evolution of dressed minibands, non perturbatively, in a wide frequency range. For one dimerization procedure, a transition between both limits can be systematically followed and a dynamic breakdown is unambigously identified. The most striking effect that may occur is a field-induced analog of an insulator-metal transition due to the suppression of a Peierls-like instability.
Editor: Sociedade Brasileira de Física
Rights: aberto
Identifier DOI: 10.1590/S0103-97331999000400013
Date Issue: 1-Dec-1999
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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