Conductance fluctuations of chiral metals

D. P. Druist, Kyung Hwa Yoo, P. J. Turley, E. G. Gwinn, K. Maranowski, A. C. Gossard

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Abstract

We study conductance fluctuations of the edge-state sheath that forms in the integer quantum Hall effect from the coupled edge states of a GaAs/AlxGa1-xAs multilayer. Comparison of the measured variance in the vertical conductance to recent theoretical predictions for mesoscopic fluctuations suggests dephasing lengths of 1-10 μm around the sheath perimeter at low temperatures. However, inconsistencies in the estimated inelastic lengths indicate that present understanding of dephasing on the sheath is incomplete.

Original languageEnglish
Pages (from-to)181-184
Number of pages4
JournalSuperlattices and Microstructures
Volume25
Issue number1-2
DOIs
Publication statusPublished - 1999 Jan

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All Science Journal Classification (ASJC) codes

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

Cite this

Druist, D. P., Yoo, K. H., Turley, P. J., Gwinn, E. G., Maranowski, K., & Gossard, A. C. (1999). Conductance fluctuations of chiral metals. Superlattices and Microstructures, 25(1-2), 181-184. https://doi.org/10.1006/spmi.1998.0634