Floquet states of semiconductor superlattices under an in-plane magnetic field and laser radiation

The motion of an electron in a semiconductor superlattice, undergoing the combined action of a static magnetic field perpendicular to the growth direction and intense electromagnetic radiation is considered. Exact numerical solutions of the time-dependent Schrödinger equation are found for a superla...

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Bibliographic Details
Published in:Microelectronics 2004-01, Vol.35 (1), p.91-93
Main Authors: Pérez-Maldonado, M.T., Rodrı́guez-Castellanos, C.
Format: Article
Language:English
Subjects:
Heterostructures
Magnetic field
Semiconductor
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Summary:The motion of an electron in a semiconductor superlattice, undergoing the combined action of a static magnetic field perpendicular to the growth direction and intense electromagnetic radiation is considered. Exact numerical solutions of the time-dependent Schrödinger equation are found for a superlattice with a sinusoidal potential. Quasienergies are calculated as function of the cyclotronic orbit center position. The features of the resulting magnetic subbands are studied. The results are compared with those previously calculated in the Kramers–Henneberger approximation. Nonlinear effects are important for laser frequencies close to the cyclotronic frequency even for moderate laser intensities. The occurrence of band suppression and dynamic localization is discussed.
ISSN:1879-2391
1879-2391
DOI:10.1016/S0026-2692(03)00230-1