BREAKDOWN OF THE QUANTUM HALL EFFECTS IN HOLE SYSTEMS AT HIGH INDUCED CURRENTS

机译：高诱导电流下孔系统中量子霍尔效应的分解

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The magnetisation of two dimensional hole systems in the quantum Hall regime has been studied using a highly-sensitive torsion balance magnetometer. In a time varying magnetic field eddy currents are induced which become large around integer and fractional filling factors where ρ_(xx) takes a very low value. The sweep rate and temperature dependence of these induced currents are in good agreement with the model of quantum Hall effect breakdown proposed recently by Matthews et al. This model also allows comparison between the energy gap at different filling factors and so provides a measurement of the fractional quantum Hall effect energy gap, Δ_(1/3), and the spin split energy gap, g~*μ_B B.

机译：量子霍尔系统中的二维空穴系统的磁化已使用高度灵敏的扭力平衡磁力计进行了研究。在随时间变化的磁场中感应出涡流，涡流在整数和分数填充因子附近变大，其中ρ_（xx）取非常低的值。这些感应电流的扫描速率和温度依赖性与马修斯等人最近提出的量子霍尔效应击穿模型非常吻合。该模型还可以比较不同填充因子下的能隙，因此可以测量分数量子霍尔效应能隙Δ_（1/3）和自旋分裂能隙g〜*μ_BB.

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来源
《International Conference on High Magnetic Fields in Semiconductor Physics; 20040802-06; Tallahassee,FL(US)》|2004年|P.79-82|共4页
会议地点 TallahasseeFL(US)
作者
J. D. GETHING; A. J. MATTHEWS; A. USHER; M. E. PORTNOI; K. V. KAVOKIN; M. HENINI;
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作者单位

School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK;

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原文格式 PDF
正文语种 eng
中图分类半导体技术;
关键词
quantum hall effect; magnetisation;

机译：量子霍尔效应；磁化;

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专利

1. Breakdown of the quantum hall effects in hole systems at high induced currents [J] . Gething JD, Matthews AJ, Usher A, International Journal of Modern Physics, B. Condensed Matter Physics, Statistical Physics, Applied Physics . 2004,第27a29期

机译：高感应电流下空穴系统中的量子霍尔效应的分解
2. The quantum Hall effect in an InAs/GaSb based electron-hole system and its current-driven breakdown [J] . Takashina K., Nicholas RJ., Kardynal B., Physica, E. Low-dimensional systems & nanostructures . 2002,第1a4期

机译：基于InAs / GaSb的电子-空穴系统中的量子霍尔效应及其电流驱动击穿
3. Electrically induced breakdown of the quantum Hall effect at different Hall bar widths: Visualizing the edge- and bulk-dominated regimes within a quantum Hall plateau [J] . P.Haremski, M.Mausser, A.Gauss, Physical review.B.Condensed matter and materials physics . 2020,第20期

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4. Breakdown of the Quantum Hall Effects in Hole Systems at High Induced Currents [C] . J. D. Gething, A. J. Matthews, A. Usher, International Conference on the Physics of Semiconductors . 2005

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BREAKDOWN OF THE QUANTUM HALL EFFECTS IN HOLE SYSTEMS AT HIGH INDUCED CURRENTS

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