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Experimental Studies of Low-field Landau Quantization in Two-dimensional Electron Systems in GaAs/AlGaAs Heterostructures

Jing-Han Chen·D. R. Hang·C. F. Huang·Tsai-Yu Huang·Jyun-Ying Lin·S. H. Lo·J. C. Hsiao·Ming-Gu Lin·M. Y. Simmons·D. A. Ritchie·C. -T. Liang
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Abstract

By applying a magnetic field perpendicular to GaAs/AlGaAs two-dimensional electron systems, we study the low-field Landau quantization when the thermal damping is reduced with decreasing the temperature. Magneto-oscillations following Shubnikov-de Haas (SdH) formula are observed even when their amplitudes are so large that the deviation to such a formula is expected. Our experimental results show the importance of the positive magneto-resistance to the extension of SdH formula under the damping induced by the disorder.

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Jing-Han Chen, D. R. Hang, C. F. Huang, Tsai-Yu Huang, Jyun-Ying Lin, S. H. Lo, J. C. Hsiao, Ming-Gu Lin, M. Y. Simmons, D. A. Ritchie, C. -T. Liang. 2006-10-29. Experimental Studies of Low-field Landau Quantization in Two-dimensional Electron Systems in GaAs/AlGaAs Heterostructures. https://doi.org/10.3938/jkps.50.776

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