Scaling properties of the plateau transitions in the two-dimensional hole gas system
Scaling properties of the plateau transitions in the two-dimensional hole gas system
复制标题
二维空穴气体系统中平台跃迁的标度特性
DOI：
10.1103/physrevb.93.075307
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发表时间：
2016-02
影响因子：
3.7
通讯作者：
Lin, Xi
中科院分区：
文献类型：
--
作者：
Du, Rui-Rui;Du, Rui-Rui;Lin, Xi;Lin, Xi
研究了二维空穴气中整数量子霍尔平台-平台跃迁的相位相干行为。从作为温度函数的平台跃迁出发，分析了多重跃迁的标度特性。我们的结果与相干空穴零点涨落的假设一致，并支持低温极限下相干时间的本征饱和。临界指数p也可以在零点涨落方案下确定。讨论了量子格里菲思奇异性与平台跃迁在实验观测上的异同。通过比较不同跃迁的结果，探讨了自旋轨道耦合效应对平台跃迁的影响。
The behavior of phase coherence is studied in two-dimensional hole gas through the integer quantum Hall plateau-to-plateau transition. From the plateau transition as a function of temperature, scaling properties of multiple transitions are analyzed. Our results are in good agreement with the assumption of the zero-point fluctuations of the coherent holes, and support the intrinsic saturation of the coherence time at low temperature limit. The critical exponent $p$ can also be determined under the scheme of the zero-point fluctuations. The similarity and difference in experimental observations between quantum Griffiths singularity and plateau transition is discussed. The spin-orbit coupling effect's influence on the plateau transition is explored by comparing the results from different transitions.