Magnetotransport in quasi-ballistic narrow wires

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

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Abstract

We are studying quantum interference effects in narrow GaAs/AlGaAs wires of the quasi-ballistic regime, where the wire dimensions are comparable to or less than the phase coherence length of electron transport. By analysing the auto-correlation function of the universal conductance fluctuations in low field magnetoresistances, we obtained the wire-width and the magnetic field dependences of the correlation field and observed phase-coherence behaviors of electron waves. Estimating the boundary correlation field as ωcτ = 1, we can discuss a mean free path in the split-gated wire. Such a boundary field analysis indicates a possibility of determination of the microscopic mean free path of quantum narrow wires.

Original languageEnglish (US)
Pages (from-to)357-360
Number of pages4
JournalPhysica B: Physics of Condensed Matter
Volume201
Issue numberC
DOIs
StatePublished - Jan 1 1994

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Ochiai, Y., Yamamoto, K., Onishi, T., Ishibashi, K., Bird, J. P., Aoyagi, Y., Sugano, T., & Ferry, D. K. (1994). Magnetotransport in quasi-ballistic narrow wires. Physica B: Physics of Condensed Matter, 201(C), 357-360. https://doi.org/10.1016/0921-4526(94)91114-2