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Tunable Wave-Vector Filtering Effect for Electrons in a Magnetically and Electrically Confined Semiconductor Heterostructure with a δ-Doping

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Abstract

We theoretically investigate how to manipulate the wave-vector filtering effect by δ-doping for electrons in a magnetically and electrically confined semiconductor heterostructure, which can be constructed by patterning a ferromagnetic stripe and a Schottky-metal stripe in a parallel configuration on the surface of the GaAs/AlxGa1−xAs heterostructure. The δ-doping dependent transmission is calculated by exactly solving the Schrödinger equation with the help of an improved transfer matrix method. An appreciable wave-vector filtering effect is revealed. Its wave-vector filtering efficiency is found to be tunable by changing the weight or position of the δ-doping. Thus, a structurally controllable momentum filter can be obtained for nanoelectronics device applications.

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Funding

This work was supported by the National Natural Science Foundation of China (grant. no. 11864009).

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Authors and Affiliations

  1. College of Science, Guilin University of Technology, Guilin, 541004, People’s Republic of China

    Meng-Rou Huang, Mao-Wang Lu, Xin-Hong Huang, Dong-Hui Liang & Zeng-Lin Cao

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  1. Meng-Rou Huang
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  2. Mao-Wang Lu
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  3. Xin-Hong Huang
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  4. Dong-Hui Liang
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  5. Zeng-Lin Cao
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Correspondence to Mao-Wang Lu.

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Huang, MR., Lu, MW., Huang, XH. et al. Tunable Wave-Vector Filtering Effect for Electrons in a Magnetically and Electrically Confined Semiconductor Heterostructure with a δ-Doping. J Supercond Nov Magn 33, 307–312 (2020). https://doi.org/10.1007/s10948-019-05330-2

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