Correlation Field Analysis of Magnetoresistance of GaN/AlGaN Heterostructure Grown on Si Substrate
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概要
- 論文の詳細を見る
We analyze the conductance fluctuations for a bulk two-dimensional electron system in a GaN/Al0.15Ga0.85N heterostructure grown on a p-type Si(111) substrate, and calculate the correlation field $B_{\text{c}}$ with the autocorrelation function $F(\Delta B) = \langle\delta G(B + \Delta B) - \delta G(B)\rangle$, in the temperature range $0.27 \leq T \leq 3$ K, which is employed as a self-thermometer to obtain the effective carrier temperature $T_{\text{e}}$ as a function of the measurement current $I$. We find that the temperature dependence agrees well with simple expectations for universal conductance fluctuations in metals, while the observed amplitude is reduced. In the study of hot-carrier phenomena, we also obtain $T_{\text{e}} \sim I^{0.5}$, which agrees with some theoretical prediction.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-06-25
著者
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Chang Chin-an
Institute Of Electro-optical Engineering Chang Gung University
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Huang J.
Department Of Materials And Optoelectronic Science Center For Nanoscience And Nanotechnology Nationa
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Chen Kuang
Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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Chang Chin-An
Institute of Electro-Optical Engineering, Chang Gang University, Taoyuan 300, Taiwan
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Lin Li-Hung
Institute of Optoelectronics and Solid State Electronics, National Chiayi University, Chiayi 60004, Taiwan
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Han Shiou-Shian
Institute of Optoelectronics and Solid State Electronics, National Chiayi University, Chiayi 60004, Taiwan
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Chen Kui-Ming
Institute of Optoelectronics and Solid State Electronics, National Chiayi University, Chiayi 60004, Taiwan
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Zhang Zhi-Yao
Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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Sun Zhi-Hao
Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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Liang C.-T.
Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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Chen N.
Institute of Electro-Optical Engineering, Chang Gang University, Taoyuan 300, Taiwan
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Chang P.
Institute of Electro-Optical Engineering, Chang Gang University, Taoyuan 300, Taiwan
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