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非对称In0.53Ga0.47As/In0.52Al0.48As量子阱的零场自旋分裂能与高场g因子

Zero-field spin splitting and high-field g-factor of an asymmetrical In0.53Ga0.47As/In0.52Al0.48As quantum well

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摘要

研究了非对称In0.53Ga0.47As/In0.52Al0.48As量子阱中二维电子气的磁输运性质,所测量的样品的径向磁阻Rxx的Shubinikov-de Haas振荡没有呈现出拍频的特征。通过测量样品的反弱局域效应提取了其零场自旋分裂能并通过对自旋分裂的Rxx双峰间距随倾斜角度θ的依赖关系的拟合提取了高场下的有效g因子。样品的Dingle plot图呈现非线性的特征,这可以归因于来自样品衬底附近的掺杂Be原子的长程势散射效应。

Abstract

This paper investigated the magnetotransport properties of the two-dimensional electron system in an asymmetrical In0.53Ga0.47As/In0.52Al0.48As quantum well, in which the expected beatings in the Shubinikov-de Haas oscillations of the longitudinal magnetoresistance Rxx were not observed. Zero-field spin splitting was extracted by measuring the weak anti-localization effect and the high field effective g-factor, g*, was extracted by fitting the tilt angle θ-dependent spacing of spin-splitted Rxx peaks. The Dingle plot is shown to be nonlinear, which can be attributed to the long-range scattering potential from the doping Be atoms near the substrate.

Newport宣传-MKS新实验室计划
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中图分类号:O472+.6A

DOI:10.11972/j.issn.1001-9014.2015.06.010

基金项目:Supported by Special Funds for Major State Basic Research under Project (2012CB619203, 2013CB922301), National Natural Science Foundation of China (11174306, 61290304), Innovation Program of Shanghai Institute of Technical Physics of the Chinese Academy of Sciences (Q-ZY-76)

收稿日期:2014-11-01

修改稿日期:2015-09-25

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徐勇刚:中国科学院上海技术物理研究所 红外物理国家重点实验室, 上海 200083
吕蒙:中国科学院上海技术物理研究所 红外物理国家重点实验室, 上海 200083
陈建新:中国科学院上海技术物理研究所 红外成像材料与器件重点实验室, 上海 200083
林铁:中国科学院上海技术物理研究所 红外物理国家重点实验室, 上海 200083
俞国林:中国科学院上海技术物理研究所 红外物理国家重点实验室, 上海 200083
戴宁:中国科学院上海技术物理研究所 红外物理国家重点实验室, 上海 200083
褚君浩:中国科学院上海技术物理研究所 红外物理国家重点实验室, 上海 200083

联系人作者:XU Yong-Gang(xyg88@mail.ustc.edu.cn)

备注:XU Yong-Gang (1988-), male, Xiaogan China, Ph.D. Research field focus on the electron transport properties of semiconductors.

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引用该论文

XU Yong-Gang,LV Meng,CHEN Jian-Xin,LIN Tie,YU Guo-Lin,DAI Ning,CHU Jun-Hao. Zero-field spin splitting and high-field g-factor of an asymmetrical In0.53Ga0.47As/In0.52Al0.48As quantum well[J]. Journal of Infrared and Millimeter Waves, 2015, 34(6): 0688

徐勇刚,吕蒙,陈建新,林铁,俞国林,戴宁,褚君浩. 非对称In0.53Ga0.47As/In0.52Al0.48As量子阱的零场自旋分裂能与高场g因子[J]. 红外与毫米波学报, 2015, 34(6): 0688

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