|標題:||Probing Landau quantization with the presence of insulator-quantum Hall transition in a GaAs two-dimensional electron system|
|作者:||Chen, Kuang Yao|
Chang, Y. H.
Huang, C. F.
Cheng, K. A.
Cheng, H. H.
Lin, H. H.
Department of Electronics Engineering and Institute of Electronics
|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.|
|期刊:||JOURNAL OF PHYSICS-CONDENSED MATTER|
|Appears in Collections:||Conferences Paper|
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