Tunable wave-vector filtering in a two-dimensional electron gas modulated by magnetic barriers and delta-doping

Liu Xu-Hui; Liu Chang-Shi; Gong Yan-Jun; Tang Zheng-Hua

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Tunable wave-vector filtering in a two-dimensional electron gas modulated by magnetic barriers and delta-doping

机译：通过磁屏障和三角掺杂调制的二维电子气体中的可调波矢量滤波

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We report a theoretical investigation on the control of wave-vector filtering (WVF) in a two-dimensional electron gas modulated by realistic magnetic barriers and d-doping, which can be experimentally realised by depositing a ferromagnetic stripe on the surface of a GaAs/AlxGa1-x As heterostructure and using atomic layer doping. Theoretical analysis demonstrates that a sizeable WVF effect still exists even if d-doping is introduced into the device. Numerical calculation reveals that the WVF efficiency is related closely to the d-doping. Thus, the WVF effect in a magnetic nanostructure can be conveniently manipulated by properly adjusting the weight and/or the position of the d-doping, giving rise to a tunable momentum filter for nanoelectronics applications.

机译：我们报告了通过逼真的磁屏障和D型调节的二维电子气体中波矢量滤波（WVF）控制的理论研究，可以通过在GaAs的表面上沉积铁磁条纹来实验地实现。 Alxga1-x作为异质结构并使用原子层掺杂。理论分析表明，即使将D掺杂引入设备中，也存在相当大的WVF效应。数值计算揭示了WVF效率与D掺杂密切相关。因此，可以通过适当地调节D型掺杂的重量和/或位置来方便地操纵磁性纳米结构中的WVF效应，从而产生用于纳米电子应用的可调谐动量过滤器。

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来源
《Philosophical Magazine Letters》 |2017年第6期|共8页
作者
Liu Xu-Hui; Liu Chang-Shi; Gong Yan-Jun; Tang Zheng-Hua;
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作者单位

Hunan Univ Sci &

Engn Sch Sci Yongzhou Peoples R China;

Hunan Univ Commerce Sch Management Changsha Hunan Peoples R China;

Hunan Univ Sci &

Engn Sch Sci Yongzhou Peoples R China;

Xiangnan Univ Gospell Joint Lab Microwave Commun Technol Chenzhou Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
Magnetic-barrier (MB) nanostructure; delta-doping; wave-vector filtering (WVF) effect; WVF efficiency; tunable momentum filter;

机译：磁屏障（MB）纳米结构;三角形;波矢量滤波（WVF）效果;WVF效率;可调动量滤波器;

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1. Tunable wave-vector filtering in a two-dimensional electron gas modulated by magnetic barriers and delta-doping [J] . Liu Xu-Hui, Liu Chang-Shi, Gong Yan-Jun, Philosophical Magazine Letters . 2017,第4a6期

机译：通过磁屏障和三角掺杂调制的二维电子气体中的可调波矢量滤波
2. Giant magnetoresistance in a two-dimensional electron gas modulated by magnetic barriers and the delta-doping [J] . Zhang Lan-Lan, Lu Mao-Wang, Yang Shi-Peng, Physics Letters, A . 2016,第42期

机译：磁性势垒和δ掺杂调制的二维电子气中的巨磁阻
3. Influence of the periodic delta-doping on the electron transport in a magnetically modulated two-dimensional electron gas [J] . Lu JD Physica, E. Low-dimensional systems & nanostructures . 2010,第8期

机译：周期性δ掺杂对磁调制二维电子气中电子输运的影响
4. TUNABLE INTERACTION BETWEEN THE TWO-DIMENSIONAL ELECTRONGAS AND AN ISOLATED LEVEL BY THE MAGNETIC FIELD. [C] . Yukihiro Takada, Masakazu Muraguchi, Shintaro Nomura, International Conference on the Physics of Semiconductors . 2009

机译：二维electongas与磁场隔离电平之间的可调相互作用。
5. Transition Shifts in Heat-Assisted Magnetic Recording and Magnetoresistance Enhancement by Wave-Vector Filtering [D] . Wang, Ziran. 2018

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6. Gate-tunable polarized phase of two-dimensional electrons at the LaAlO3/SrTiO3 interface [O] . Arjun Joshua, Jonathan Ruhman, Sharon Pecker, 2013

机译：LaAlO3 / SrTiO3界面上二维电子的门可调极化相
7. In-plane stray field induced spin-filtering in a two-dimensional electron gas under the modulation of surface ferromagnetic dual-gate [O] . Wang Y (Wang Y.), Jiang Y (Jiang Y.), Zhang XW (Zhang X. W.), 2010

机译：表面铁磁双栅极调制对二维电子气中面内杂散场的自旋滤波

Tunable wave-vector filtering in a two-dimensional electron gas modulated by magnetic barriers and delta-doping

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