Tunable Wave-Vector Filtering Effect for Electrons in a Magnetically and Electrically Confined Semiconductor Heterostructure with a δ-Doping
| Autor: | Zeng-Lin Cao, Dong-Hui Liang, Mao-Wang Lu, Meng-Rou Huang, Xin-Hong Huang |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science business.industry Transfer-matrix method (optics) Doping Heterojunction Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Semiconductor Ferromagnetism Nanoelectronics Condensed Matter::Superconductivity 0103 physical sciences Optoelectronics Condensed Matter::Strongly Correlated Electrons Wave vector 010306 general physics business |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 33:307-312 |
| ISSN: | 1557-1947 1557-1939 |
| Popis: | 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 Schrodinger 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. |
| Databáze: | OpenAIRE |
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