Rectification effect about vacuum separating carbon nanotube bundle predicted by first-principles study
- 作者：Y. Min<sup>asup><sup> ; sup><sup>minshiyi@gmail.comsup> ; J.H. Fang<sup>asup> ; C.G. Zhong<sup>asup> ; K.L. Yao<sup>bsup>
- 关键词：Non-equilibrium Green始s function ; Density-functional theory ; Spin current ; Ab initio
- 刊名：Physics Letters A
- 出版年：2012
- 期刊代码：57_03759601
- 类别：ph
- 出版时间：7 May, 2012
- 卷：376
- 期：23
- 页码：1845-1848
- 文件大小：363 K
摘要
For the molecular spintronics transport systems, we propose that the spin current rectifier can be constructed using the nonmagnetic lead. The proposal is confirmed according to the first-principles study of the transport characteristics of a vacuum separating carbon nanotube bundle where only one zigzag edge is hydrogenated. The strong rectification effect for spin (charge) current is obtained in the case of the magnetic parallel (anti-parallel) configuration of two zigzag edges. Our investigations indicate that such device can be used as the spin filter and the counterpart of the junction in the field of molecular electronics.