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Form of Scaling Function in Quantum Hall Plateau Transitions |
| TU Tao;ZHAO Yong-Jie GUO Guo-Ping;HAO Xiao-Jie;GUO Guang-Can |
| Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 |
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| Cite this article: |
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TU Tao, ZHAO Yong-Jie GUO Guo-Ping, HAO Xiao-Jie et al 2007 Chin. Phys. Lett. 24 1346-1349 |
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Abstract We have measured the temperature dependence of the resistance R xx
and Rxy of a two-dimensional electron system in the regime of the quantum Hall plateau transition. We observe for our sample a considerable large critical exponent k ～ 0.66-0.77, which may be due to the dominant electron-phonon scattering. Further we find a simple exponential form of Rxx=Rcexp (-s) in agreement with the theoretically proposed universal scaling function.
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| Keywords:
73.43.-f
73.43.Nq
71.30.+h
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Received: 18 January 2007
Published: 23 April 2007
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| PACS: |
73.43.-f
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(Quantum Hall effects)
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73.43.Nq
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(Quantum phase transitions)
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71.30.+h
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(Metal-insulator transitions and other electronic transitions)
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