Work

ac-Field-Controlled Anderson Localization in Disordered Semiconductor Superlattices

Year: 1995

Type: article

Abstract: An ac field, tuned exactly to resonance with the Stark ladder in an ideal tight binding lattice under strong dc bias, counteracts Wannier-Stark localization and leads to the emergence of extended Floquet states. If there is random disorder, these states localize. The localization lengths depend nonmonotonically on the ac field amplitude and become essentially zero at certain parameters. This effect is of possible relevance for characterizing the quality of superlattice samples, and for performing experiments on Anderson localization in systems with well-defined disorder.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.75.3914

Authors: Martin Holthaus, Gerald H. Ristow, Daniel W. Hone

Institution: Philipps University of Marburg

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2090418599

FWCI: 3.2

Cites: 20

Cited by: 86

Related to: 10