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Dynamical Localization of Semiconductor Superlattices Under a Dc-bichromatic Electric Field by Duan Suqing; Zhi-Gang Wang; Bin-Yi Wu; Xian-Geng Zhao is a Physics and Astronomy article available to read on EtoBox.

What is Dynamical Localization of Semiconductor Superlattices Under a Dc-bichromatic Electric Field about?

Within a single-band tight-binding model, we investigate the property of dynamical localization of a one-dimensional semiconductor superlattices under a dc-bichromatic electric field. We obtain analytically the quasi-energy spectrum of the system and the conditions of dynamical localization. The results show that they depend sensitively on the frequency ratios, ω 0 /ω 1 and ω 2 /ω 1 , where ω 0 is the Bloch frequency, ω 1 and ω 2 are the external electric field frequencies. For the case in a bichromatic ac field (ω 0 = 0), the dynamical localization happens at the quasi-energy band collapse points. For the case in a dcbichromatic electric field (ω 0 = 0), when one of the ratios is an irrational number, the other is a rational number, the dynamical localization always remains. When both the ratios are rational or irrational numbers, the dynamical localization happens at the quasi-energy band collapse points.

Who reads Dynamical Localization of Semiconductor Superlattices Under a Dc-bichromatic Electric Field?

Author

Duan Suqing; Zhi-Gang Wang; Bin-Yi Wu; Xian-Geng Zhao

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0375-9601)

Published

2003

Language

EN

Field

Physics and Astronomy (Physical Sciences)