Impacto
Downloads
Downloads per month over past year
Moura, F. A. B. F., de and Lyra, M. L. and Domínguez-Adame Acosta, Francisco and Malyshev, Andrey (2005) Bloch oscillations in an aperiodic one-dimensional potential. Physical Review B, 71 (10). ISSN 1098-0121
Preview |
PDF
77kB |
Official URL: http://dx.doi.org/10.1103/PhysRevB.71.104303
Abstract
We study the dynamics of an electron subjected to a static uniform electric field within a one-dimensional tight-binding model with a slowly varying aperiodic potential. The unbiased model is known to support phases of localized and extended one-electron states separated by two mobility edges. We show that the electric field promotes sustained Bloch oscillations of an initial Gaussian wave packet whose amplitude reflects the bandwidth of extended states. The frequency of these oscillations exhibits unique features, such as a sensitivity to the initial wave packet position and a multimode structure for weak fields, originating from the characteristics of the underlying aperiodic potential.
Item Type: | Article |
---|---|
Additional Information: | © 2005 The American Physical Society. |
Uncontrolled Keywords: | Metal-Insulator-Transition, Random-Dimer Model, Correlated Disorder, Quantum Diffusion, Electronic States, Anderson Model, Mobility Edge, Localization, Absence, Superlattices |
Subjects: | Sciences > Physics > Materials |
ID Code: | 27478 |
Deposited On: | 28 Nov 2014 09:14 |
Last Modified: | 28 Nov 2014 09:14 |
Origin of downloads
Repository Staff Only: item control page