Low-dimensional transports in GaAs AlGaAs quasi-one-dimensional wires by a correlation field analysis of the phase coherent interferences

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

Research output: Contribution to journalArticle

Abstract

Carrier scattering processes in quasi-one-dimensional wires were studied by a correlation field analysis of conductance fluctuations observed in the low-temperature magnetoresistance of GaAs AlGaAs As split gate wires. At low magnetic field, the amplitude and the correlation field ΔBc of universal conductance fluctuations (UCF) were observed to be independent of the field and to retain universality. However, at high fields, ΔBc was found to increase as a power law of the magnetic field. The experimental results were compared with a semi-classical model for electron propagation at high fields. The models led to a different field dependence with the power law exponents expected for diffusive and ballistic transports. It was found that analysis of the power law exponent is an important tool for the characterization of electron wave propagation in quantum wires.

Original languageEnglish (US)
Pages (from-to)364-366
Number of pages3
JournalMaterials Science and Engineering B
Volume35
Issue number1-3
DOIs
StatePublished - 1995

Fingerprint

aluminum gallium arsenides
wire
Wire
Magnetic fields
interference
Semiconductor quantum wires
Electrons
Magnetoresistance
Ballistics
exponents
Wave propagation
Scattering
quantum wires
magnetic fields
ballistics
wave propagation
electrons
propagation
scattering
Temperature

Keywords

  • Carrier scattering
  • Conductance fluctuations
  • Correlation field analysis

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Low-dimensional transports in GaAs AlGaAs quasi-one-dimensional wires by a correlation field analysis of the phase coherent interferences. / Ochiai, Y.; Yamamoto, K.; Ishibashi, K.; Bird, J. P.; Aoyagi, Y.; Sugano, T.; Ferry, D. K.

In: Materials Science and Engineering B, Vol. 35, No. 1-3, 1995, p. 364-366.

Research output: Contribution to journalArticle

Ochiai, Y. ; Yamamoto, K. ; Ishibashi, K. ; Bird, J. P. ; Aoyagi, Y. ; Sugano, T. ; Ferry, D. K. / Low-dimensional transports in GaAs AlGaAs quasi-one-dimensional wires by a correlation field analysis of the phase coherent interferences. In: Materials Science and Engineering B. 1995 ; Vol. 35, No. 1-3. pp. 364-366.
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AU - Bird, J. P.

AU - Aoyagi, Y.

AU - Sugano, T.

AU - Ferry, D. K.

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