ac-field-controlled localization-delocalization transition in a one-dimensional disordered system
Year: 2006
Type: article
Abstract: Based on the random dimer model, we study correlated disorder in a one-dimensional system driven by a strong ac field. As the correlations in a random system may generate extended states and enhance transport in dc fields, we explore the role that ac fields have on these properties. We find that similar to ordered structures, ac fields renormalize the effective hopping constant to a smaller value and thus help to localize a state. We find that ac fields control then a localization-delocalization transition in a given one-dimensional system with correlated disorder. The competition between band renormalization (band collapse and dynamic localization), Anderson localization, and the structure correlation is shown to result in interesting transport properties.
Source: Physical Review B
Authors: Wei Zhang, Sergio E. Ulloa
Institution: Ohio University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1973747039