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Theory of the absorption of electromagnetic radiation by hopping in n‐type Si and Ge considering all polarizations of acoustic phonons
Author(s) -
Banaszkiewicz M.
Publication year - 1975
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.2220690127
Subject(s) - phonon , photon , wavelength , absorption (acoustics) , attenuation coefficient , electromagnetic radiation , physics , radiation , atomic physics , condensed matter physics , optics
The theory of the absorption of electromagnetic radiation by hopping in n‐type Si and Ge is investigated. Photon wavelengths from 100 to 800 μm for Si and from 500 μm to 2.5 cm for Ge are considered. Both longitudinal and transversal acoustic phonons are taken into account. It is shown that the absorption coefficient α (1) for absorption of a photon with emission of a phonon can be neglected in comparison with the coefficient α (0) describing the absorption of a photon without emission of a phonon. A new averaging method in the computations of α (0) is used. The agreement between the numerical results and the experimental data is good except of the region of short wavelengths.