Crossref journal-article
AIP Publishing
Chaos: An Interdisciplinary Journal of Nonlinear Science (317)
Abstract

We show that classical chaotic scattering has experimentally measurable consequences for the quantum conductance of semiconductor microstructures. These include the existence of conductance fluctuations—a sensitivity of the conductance to either Fermi energy or magnetic field—and weak-localization—a change in the average conductance upon applying a magnetic field. We develop a semiclassical theory and present numerical results for these two effects in which we model the microstructures by billiards attached to leads. We find that the difference between chaotic and regular classical scattering produces a qualitative difference in the fluctuation spectrum and weak-localization lineshape of chaotic and nonchaotic structures. While the semiclassical theory within the diagonal approximation accounts well for the weak-localization lineshape and for the spectrum of the fluctuations, we uncover a surprising failure of the semiclassical diagonal-approximation theory in describing the magnitude of these quantum transport effects.

Bibliography

Baranger, H. U., Jalabert, R. A., & Stone, A. D. (1993). Quantum-chaotic scattering effects in semiconductor microstructures. Chaos: An Interdisciplinary Journal of Nonlinear Science, 3(4), 665–682.

Authors 3
  1. Harold U. Baranger (first)
  2. Rodolfo A. Jalabert (additional)
  3. A. Douglas Stone (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 8:39 a.m.)
Deposited 1 year, 6 months ago (Feb. 1, 2024, 6:04 p.m.)
Indexed 3 weeks ago (Aug. 6, 2025, 9:06 a.m.)
Issued 31 years, 10 months ago (Oct. 1, 1993)
Published 31 years, 10 months ago (Oct. 1, 1993)
Published Print 31 years, 10 months ago (Oct. 1, 1993)
Funders 0

None

@article{Baranger_1993, title={Quantum-chaotic scattering effects in semiconductor microstructures}, volume={3}, ISSN={1089-7682}, url={http://dx.doi.org/10.1063/1.165928}, DOI={10.1063/1.165928}, number={4}, journal={Chaos: An Interdisciplinary Journal of Nonlinear Science}, publisher={AIP Publishing}, author={Baranger, Harold U. and Jalabert, Rodolfo A. and Stone, A. Douglas}, year={1993}, month=oct, pages={665–682} }