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Spin relaxation rates as a function of electron kinetic energy measured in InSb epilayers. Data points labeled (f) were taken from Refs. 14 and 16. The dark gray (purple) [light gray (blue-green)] lines indicate the theoretical limits for the EY (DP) process.
The FTIR absorbance spectra of each InSb sample is shown at 77 K (red closed circles) and 293 K (blue open circles) along with the pulse spectra used to measure the samples spin relaxation. The rightmost upper panel displays two sample traces (10 and 100 K) of the normalized transmission as a function of time for sample labeled (e) with the pulse probe wavelength centered at 4.6 microns.
Measured parameters of the InSb samples studied. All samples are n-type in the temperature range of the pump probe measurements.
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