Abstract
Broadening of the inter-subband optical spectra caused by static scatterers is studied both in the absence and presence of a magnetic field normal to space charge layers on semiconductor surfaces. The width of the spectrum is not given by a simple arithmetic average of the widths of the subbands between which the transition takes place. We have a correction term, which cancels a part of the broadening due to intra-subband scattering process in some cases. Under strong magnetic fields, the lineshape depends on the relative position of the two subbands because of the discreteness of the density of states.
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Ando, T. Lineshape of inter-subband optical transitions in space charge layers. Z Physik B 24, 33–39 (1976). https://doi.org/10.1007/BF01312871
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DOI: https://doi.org/10.1007/BF01312871