From semiclassical transport to quantum Hall effect under low-field Landau quantization
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
The crossover from the semiclassical transport to quantum Hall effect is studied by examining a two-dimensional electron system in an AlGaAs/GaAs heterostructure. By probing the magneto-oscillations, it is shown that the semiclassical Shubnikov-de Haas (SdH) formulation can be valid even when the minima of the longitudinal resistivity approach zero. The extension of the applicable range of the SdH theory could be due to the damping effects resulting from disorder and temperature. Moreover, we observed plateau-plateau transition like behavior with such an extension. From our study, it is important to include the positive magnetoresistance to refine the SdH theory.
Keywords
Cite
@article{arxiv.cond-mat/0608408,
title = {From semiclassical transport to quantum Hall effect under low-field Landau quantization},
author = {D. R. Hang and C. F. Huang and Y. W. Zhang and H. D. Yeh and J. C. Hsiao and H. L. Pang},
journal= {arXiv preprint arXiv:cond-mat/0608408},
year = {2007}
}
Comments
11 pages, 5 figures