An investigation of the anisotropy of the valence band of GaAs by cyclotron resonance
- 28 July 1976
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 9 (14) , 2809-2821
- https://doi.org/10.1088/0022-3719/9/14/019
Abstract
Cyclotron resonance of the holes in p-GaAs is reported at wavelengths of 2.2 mm and 337 mu m and at liquid nitrogen temperatures. The conditions under which hole cyclotron-resonance measurements can be interpreted as being dominated by classical light and heavy holes are investigated by means of complimentary cyclotron-resonance studies in p-Ge at 337 mu m wavelengths over the temperature range 70-200K. When the ratio of photon energy to thermal energy (h(cross) omega /kT) is about 0.6, weak quantum structure can be observed and the heavy-hole lines observed in certain directions can be shifted from the classical k=0 values by as much as 10%. The bare masses for the light and heavy holes in GaAs, after nonparabolicity and polaron corrections have been carried out, are found.Keywords
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