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Scattering time in GaAs/AlGaAs narrow wires in the presence of magnetic field

✍ Scribed by K. Ishibashi; Y. Aoyagi; S. Namba; Y. Ochiai; M. Kawabe; K. Gamo

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
264 KB
Volume
9
Category
Article
ISSN
0749-6036

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✦ Synopsis

Magnetoresistance measurements have been performed in narrow GaAs/A1GaAs wires in order to study the scattering process in mesoscopic wires. Amplitude analysis of theShubnikov -de Haas oscillations shows that electrons have two scattering times, depending upon the magnetic field range. The critical field which separates these scattering times seems to be determined by the relation between the wire width and the electron cyclotron radius. This effect is discussed in terms of the electron trajectories in a wire under the magnetic field.

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