Magneto-acoustic absorption by the electron-hole liquid in stressed germanium |
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| Authors: | T. Ohyama A.D.A. Hansen J.L. Turney |
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| Affiliation: | Physics Department, College of General Education, Osaka University, Osaka, Japan;Physics Department, University of California, Berkeley, CA 94720, U.S.A. |
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| Abstract: | We report the observation of magneto-acoustic absorption by the electron-hole liquid in a potential well in stressed germanium. This experiment confirms the metallic character of the liquid and yields direct values for the electron Fermi level ?F = (2.6±0.1) meV and inter-carrier collision time τ = (6.0±0.5) × 10-11sec at 1.8 K under a stress of approximately 5 kg/mm2. From ?F we deduce an electron density of n = (6.2) ± 0.4) × 1016cm-3 at 1.8 K. |
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