The electron transport characters in a nanostructure with the periodic magnetic-electric barriers |
| |
Authors: | Lu Jian-Duo Shao Liang Hou Yang-Lai and Dai Hou-Mei |
| |
Institution: | Department of Applied Physics, Wuhan University of Science and Technology, Wuhan 430081, China |
| |
Abstract: | This paper detailedly studies the transmission probability, the spin
polarization and the conductance of the ballistic electron in a
nanostructure with the periodic magnetic-electric barriers. These
observable quantities are found to be strongly dependent not only on
the magnetic configuration, the incident electron energy and the
incident wave vector, but also on the number of the periodic
magnetic-electric barriers. The transmission coefficient and the spin
polarization show a periodic pattern with the increase of the
separation between two adjacent magnetic fields, and the resonance
splitting increases as the number of periods increases. Surprisingly,
it is found that a polarization can be achieved by spin-dependent
resonant tunnelling in this structure, although the average magnetic
field of the structure is zero. |
| |
Keywords: | magnetic nanostructure spin
polarization resonance splitting wave-vector filtering |
|
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|