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)197-201
Number of pages5
JournalSuperlattices and Microstructures
Volume19
Issue number3
StatePublished - Apr 1996

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Ochiai, Y., Yamamoto, K., Ohkubo, Y., Ishibashi, K., Bird, J. P., Aoyagi, Y., Sugano, T., & 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), 197-201.