Probing Landau quantization with the presence of insulator-quantum Hall transition in a GaAs two-dimensional electron system

Kuang Yao Chen, Y. H. Chang, C. T. Liang, N. Aoki, Y. Ochiai, C. F. Huang, Li Hung Lin, K. A. Cheng, H. H. Cheng, H. H. Lin, Jau Yang Wu, Sheng-Di Lin

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14 引文 斯高帕斯(Scopus)

摘要

Magneto-transport measurements are performed on the two-dimensional electron system (2DES) in an AlGaAs/GaAs heterostructure. By increasing the magnetic field perpendicular to the 2DES, magneto-resistivity oscillations due to Landau quantization can be identified just near the direct insulator-quantum Hall (I-QH) transition. However, different mobilities are obtained from the oscillations and transition point. Our study shows that the direct I-QH transition does not always correspond to the onset of strong localization.

原文English
文章編號295223
期刊Journal of Physics Condensed Matter
20
發行號29
DOIs
出版狀態Published - 23 七月 2008

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