| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000159047 |
| ISSN: | 0103-9733 |
| Authors: | Rivera, P.H1 Schulz, P.A2 |
| Institutions: | 1Universidade Federal de Sao Carlos, Departamento de Física, Sao Carlos, Sao Paulo. Brasil 2Universidade Estadual de Campinas, Instituto de Fisica "Gleb Wataghin", Campinas, Sao Paulo. Brasil |
| Year: | 1999 |
| Season: | Dic |
| Volumen: | 29 |
| Number: | 4 |
| Pages: | 685-689 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English 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 |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Semiconductores, Propiedades electrónicas, Minibandas, Localizaciónm dinámica, Microestructuras |
| Keyword: | Physics and astronomy, Condensed matter physics, Semiconductors, Electronic properties, Minibands, Dynamic localization, Microstructures |
| Full text: | Texto completo (Ver HTML) |
