Evolution of dynamic localization regimes in coupled minibands

P. H. Rivera, P. A. Schulz

Research output: Contribution to journalArticle

1 Scopus citations

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.
Original languageAmerican English
Pages (from-to)685-689
Number of pages5
JournalBrazilian Journal of Physics
DOIs
StatePublished - 1 Jan 1999
Externally publishedYes

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