Instability Associated with the Gradient of Carrier Density in Germanium Slice

The onset of current oscillation in a germanium slice in a transverse magnetic field was studied by taking into consideration the existence of gradient of carrier density along the direction of thickness. The gradient was estimated from the observations of 9.3 Gc microwave reflection and the thresho...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1968-01, Vol.7 (9), p.1059
Main Authors: Miyazaki, Kazuhiko, Yamaguchi, Jiro
Format: Article
Language:English
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Summary:The onset of current oscillation in a germanium slice in a transverse magnetic field was studied by taking into consideration the existence of gradient of carrier density along the direction of thickness. The gradient was estimated from the observations of 9.3 Gc microwave reflection and the threshold gradient experimentally determined for the onset of the density wave instability was compared with the theoretically estimated one. The results show that this threshold gradient is nearly equal to that of the instability of fundamental mode. However, the oscillation was quenched in a high transverse magnetic field.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.7.1059