Clear experimental evidence for boundary and impurity scattering related crossover field scales in GaAs/AlGaAs split-gate wires

Y. Ochiai, K. Yamamoto, Y. Ohkubo, K. Ishibashi, J. P. Bird, Y. Aoyagi, T. Sugano, D. K. Ferry

Research output: Contribution to journalArticle

Abstract

We study the magnetic field dependence of the correlation field ΔBc and amplitude δg of the conductance fluctuations, observed in the low temperature magnetoresistance of GaAs/AlGaAs split-gate wires. Near zero field, universality of quantum interference is retained and the magnetoresistance shows universal conductance fluctuations. At high magnetic fields, although the discrete Landau level quantization becomes resolved. ΔBc and δg are found to increase linearly with magnetic field, with a slope which depends upon the nature of electron scatterings in the wire.

Original languageEnglish (US)
Pages (from-to)196-201
Number of pages6
JournalSuperlattices and Microstructures
Volume19
Issue number3
StatePublished - Apr 1996

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aluminum gallium arsenides
crossovers
wire
Wire
Magnetoresistance
Scattering
Impurities
Magnetic fields
impurities
scattering
magnetic fields
Electron scattering
electron scattering
slopes
interference
gallium arsenide
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ochiai, Y., Yamamoto, K., Ohkubo, Y., Ishibashi, K., Bird, J. P., Aoyagi, Y., ... Ferry, D. K. (1996). Clear experimental evidence for boundary and impurity scattering related crossover field scales in GaAs/AlGaAs split-gate wires. Superlattices and Microstructures, 19(3), 196-201.

Clear experimental evidence for boundary and impurity scattering related crossover field scales in GaAs/AlGaAs split-gate wires. / Ochiai, Y.; Yamamoto, K.; Ohkubo, Y.; Ishibashi, K.; Bird, J. P.; Aoyagi, Y.; Sugano, T.; Ferry, D. K.

In: Superlattices and Microstructures, Vol. 19, No. 3, 04.1996, p. 196-201.

Research output: Contribution to journalArticle

Ochiai, Y, Yamamoto, K, Ohkubo, Y, Ishibashi, K, Bird, JP, Aoyagi, Y, Sugano, T & Ferry, DK 1996, 'Clear experimental evidence for boundary and impurity scattering related crossover field scales in GaAs/AlGaAs split-gate wires', Superlattices and Microstructures, vol. 19, no. 3, pp. 196-201.
Ochiai, Y. ; Yamamoto, K. ; Ohkubo, Y. ; Ishibashi, K. ; Bird, J. P. ; Aoyagi, Y. ; Sugano, T. ; Ferry, D. K. / Clear experimental evidence for boundary and impurity scattering related crossover field scales in GaAs/AlGaAs split-gate wires. In: Superlattices and Microstructures. 1996 ; Vol. 19, No. 3. pp. 196-201.
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