Experimental evidence for boundary and impurity scattering related crossover in quasi-ballistic wires

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

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We study the magnetic field dependence of the correlation field △Bc and amplitude δg of the conductance fluctuations, observed in the low-temperature magnetoresistance of a quasi-ballistic split-gate wire. With increasing the fields, there exists a crossover from diffusive to ballistic motions in the quasi-ballistic transport. Scattering processes have been discussed by analyzing a linear field dependence of △Bc above the crossover. The crossover behaviors are considered to be a precursor effect on the formation of the edge channel accompanied with a rapid increase of inelastic scattering length lin.

Original languageEnglish (US)
Pages (from-to)152-155
Number of pages4
JournalPhysica B: Condensed Matter
Volume227
Issue number1-4
DOIs
StatePublished - Sep 1996

Keywords

  • Correlation field
  • Inelastic length
  • Phase coherence length
  • Quasi-ballistic wire
  • Universal conductance fluctuations

ASJC Scopus subject areas

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

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