Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1596967 | Solid State Communications | 2007 | 5 Pages |
Abstract
The crossover from the semiclassical transport to the 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 positive magnetoresistance to refine the SdH theory.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
D.R. Hang, C.F. Huang, Y.W. Zhang, H.D. Yeh, J.C. Hsiao, H.L. Pang,