Spin-orbit coupling and Zeeman effect in an HgCdTe inversion layer with interface microroughness
投稿时间:2020-01-15  修订日期:2020-09-04  download
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涂华垚 中国科学院上海技术物理研究所中国科学院大学 thy2013@whu.edu.cn 
吕蒙 中国科学院上海技术物理研究所  
张松然 中国科学院上海技术物理研究所上海理工大学材料科学与工程学院  
俞国林 中国科学院上海技术物理研究所 yug@mail.sitp.ac.cn 
孙艳 中国科学院上海技术物理研究所  
陈鑫 中国科学院上海技术物理研究所  
戴宁 中国科学院上海技术物理研究所  
Abstract:The Spin-orbit coupling interaction, Zeeman effect and interface microroughness effect in an HgCdTe inversion layer were investigated by experimental measurement. Theoretical models were used to analyze the weak antilocalization (WAL) at different temperatures and in different in-plane magnetic fields. It is found that both the Zeeman effect and the interface microroughness effect will suppress the WAL. And the interface microroughness effect takes effect by facilitating a weak localization in the normal direction of the two-dimensional electron gas (2DEG) plane. With the increasing magnetic field, the interface microroughness induced WL will be suppressed first and then the WAL will be suppressed by Zeeman effect. What’s more, the analysis of parameters τ?τ_? and |m_r^* g_3^* | indicates that the Zeeman effect’s suppression on WAL is independent ofdoes not depend on temperature.
keywords:HgCdTe, Spin-orbit interaction, Zeeman effect, Interface microroughness effect
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Copyright:《Journal of Infrared And Millimeter Waves》