Properties of space-charge waves in the presence of a magnetic field

被引：0
|
作者：
Petrov, D. [1 ]
Hilling, B. [2 ]
Lemmer, M. [2 ]
Imlau, M. [2 ]
机构：
[1] Ioffe Physico Technical Institute, Russian Academy of Sciences, St. Petersburg, Russia
[2] Universität Osnabrück, Fachbereich Physik, D-49069 Osnabrück, Germany
来源：
Journal of Holography and Speckle | 2009年 / 5卷 / 03期
关键词：
Semiconducting gallium - Vector spaces - Electric fields - Electric space charge - Gallium arsenide - Semiconducting indium phosphide - III-V semiconductors - Magnetoresistance;
D O I：
10.1166/jhs.2009.1027
中图分类号：
学科分类号：
摘要：
The influence of magnetic fields on the properties of optically generated space-charge waves in photosensitive GaAs:Cr and InP:Fe is reviewed. A strong impact of the direction of the magnetic field with respect to the externally applied electric field and the wave vector of the space-charge wave is uncovered. We explain our results either by the action of the Lorentz force or specific physical mechanisms related to the materials under study including the magneto-resistance and the negative differential conductivity. Furthermore, in some cases, inhomogeneities of the samples' material parameters have to be taken into account. Copyright © 2009 American Scientific Publishers All rights reserved.
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页码：219 / 226
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