Title: Giant Quantum Oscillations in High-Purity Bismuth: Search for Hole-Fermi-Surface Anomalies
Abstract: The Fermi surface of holes and electrons in bismuth has been investigated by means of giant quantum oscillations in the ultrasonic attenuation in an attempt to explain the anomalies in the hole Fermi surface reported by Giura et al. The properties of giant quantum oscillations are reviewed, with emphasis on the effects of finite-carrier relaxation time on nonextremal orbits. Experiments were performed on very high-qualtiy single crystals ($\ensuremath{\tau}\ensuremath{\sim}6$ nsec), and all sheets of the Fermi surface were studied. The complete disappearance of oscillations previously observed was not seen. Expect for one orientation in which nonextremal areas were observed, all oscillations were due to extremal orbits (as were those reported by Giura et al.). Thus, effects due to a nonextremal orbit tangent to a saddle point on the Fermi surface, as suggested by Giura et al., could not occur. It is suggested that the anomalies may have been caused by crystal misorientation.
Publication Year: 1973
Publication Date: 1973-01-15
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 6
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