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Influence of Electron Heating on Reflection and Attenuation Coefficients of Electromagnetic Waves in Semiconductors with Superlattice
Author(s) -
Dykman I. M.,
Prokhnitskii L. A.
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221110204
Subject(s) - superlattice , reflection (computer programming) , bragg's law , condensed matter physics , attenuation , collision frequency , electron , electron density , electromagnetic radiation , resonance (particle physics) , amplitude , electric field , semiconductor , electromagnetic field , atomic physics , physics , materials science , optics , diffraction , quantum mechanics , computer science , programming language
The electromagnetic wave reflection from the surface of a semiconductor with a superlattice in a heating electric field is studied. The superlattice is formed by the periodic distribution of the electron density. Frequency dependences of the reflection and attenuation coefficients in the vicinity of the Bragg resonance are calculated, taking into account electron interaction with lattice vibrations. These dependences are shown to have maxima at the resonance frequency ω R . The shape and magnitude of the maxima depend significantly on the ratio |ξ| ω R / v 0 , where the amplitude of electron density modulation |ξ| and the effective collision frequency v 0 are functions of the heating field. The field dependences of |ξ| and v 0 show the possibility of controlling the Bragg reflection effects, which can be used, for example, to investigate v 0 .