Magnetotransport in GaAs=AlGaAs quantum wells with ultrashort period (a = 12 nm) unidirectional potential modulation has been studied. Systematic suppression of the exchange enhancement mechanism for quantum Hall spin gap is observed. A reproducible a periodic uctuation of magnetoresistance reminisc
Magneto-conductivity in lateral superlattices with fluctuating period
β Scribed by Hiroshi Tsukahara; Tsuneya Ando
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 171 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1386-9477
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β¦ Synopsis
We calculate both dynamical conductivities and magneto-conductivities using Boltzmann equation in a disordered quantum-wire array characterized by strongly anisotropic diffuse Bragg scattering. The dynamical conductivity parallel to the quantum-wire direction decreases more quickly than that in the perpendicular direction, while the field-dependence of the magneto-conductivity is almost isotropic.
π SIMILAR VOLUMES
We study the magneto-resistance of a V-grooved GaAs quantum-wire ΓΏeld-e ect transistor (QWR-FET) realized by selective growth of metalorganic vapor phase epitaxy. At low temperatures, the magneto-resistance of the wire shows reproducible uctuations resulting from the quantum interference of electron