Cyclotron resonance measurements of the non-parabolicity of the conduction bands in silicon and germanium
- 28 July 1976
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 9 (14), 2803-2808
- https://doi.org/10.1088/0022-3719/9/14/018
Abstract
The non-parabolicities of the transverse effective masses mperpendicular to * for the lowest conduction band minima are measured in silicon and germanium by means of cyclotron resonance at submillimeter wavelengths. For silicon a 2+or-1% increase in mperpendicular to * at 10 meV into the band is found, whereas for germanium an 8+or-4% increase at 50 meV is measured. A recent report by Fink and Braunstein (Solid St. Commun., vol.15, p.1627 (1974)) that the cyclotron resonance scattering time in germanium decreases by up to a factor of five in going from a measuring frequency of 35 GHz to 891 GHz is shown not to occur for high-purity samples of silicon and germanium.Keywords
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