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arXiv · 1004.5315

Probing onset of strong localization and electron-electron interactions with the presence of direct insulator-quantum Hall transition

Shun-Tsung Lo·Kuang Yao Chen·T. L. Lin·Li-Hung Lin·Dong-Sheng Luo·Y. Ochiai·N. Aoki·Yi-Ting Wang·Zai Fong Peng·Yiping Lin·J. C. Chen·Sheng-Di Lin·C. F. Huang·C. -T. ~Liang
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Abstract

We have performed low-temperature transport measurements on a disordered two-dimensional electron system (2DES). Features of the strong localization leading to the quantum Hall effect are observed after the 2DES undergoes a direct insulator-quantum Hall transition with increasing the perpendicular magnetic field. However, such a transition does not correspond to the onset of strong localization. The temperature dependences of the Hall resistivity and Hall conductivity reveal the importance of the electron-electron interaction effects to the observed transition in our study.

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Shun-Tsung Lo, Kuang Yao Chen, T. L. Lin, Li-Hung Lin, Dong-Sheng Luo, Y. Ochiai, N. Aoki, Yi-Ting Wang, Zai Fong Peng, Yiping Lin, J. C. Chen, Sheng-Di Lin, C. F. Huang, C. -T. ~Liang. 2010-04-29. Probing onset of strong localization and electron-electron interactions with the presence of direct insulator-quantum Hall transition. https://doi.org/10.1016/j.ssc.2010.07.040

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