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The electron transport characters in a nanostructure with the periodic magnetic-electric barriers
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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. 相似文献
2.
The electron transport characters in a nanostructure with the periodic magnetic-electric barriers
下载免费PDF全文
![点击此处可从《中国物理》网站下载免费的PDF全文](/ch/ext_images/free.gif)
This paper detailedly studies the transmission probability, the spin polarization and the conductance of the ballistic electron in a nanostrueture 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. 相似文献
3.
报导了新型激光晶体Nd:GdVO4的结构及生长;研究了其光谱特性,得出在808nm处具有较强的吸收峰,且三个主发射峰波长分别为912.6nm、1063.1nm、1341.3nm;讨论了其热导率,认为具有很高的热导率可能是因为掺入Nd^3+后晶格畸变并不大引起的;通过与Nd:YVO4和Nd:YAG进行性能比较,证明该晶体是LD泵浦高功率激光器的理想工作物质. 相似文献
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