Rashba electron transport in one-dimensional quantum waveguides
文献类型：期刊论文
| 作者 | Liu DuanYang1; Xia JianBai1,2; Chang YiaChung2 |
| 刊名 | Science china-physics mechanics & astronomy
 |
| 出版日期 | 2010 |
| 卷号 | 53期号:1页码:16-23 |
| 关键词 | Rashba wave function One-dimensional waveguide Boundary condition |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-010-0112-3 |
| 通讯作者 | Xia jianbai(xiajb@red.semi.ac.cn) |
| 英文摘要 | The properties of rashba wave function in the planar one-dimensional waveguide are studied, and the following results are obtained. due to the rashba effect, the plane waves of electron with the energy e divide into two kinds of waves with the wave vectors k(1)=k(0)+k(delta) and k(2)=k(0)-k(delta), where k(delta) is proportional to the rashba coefficient, and their spin orientations are +pi/2 (spin up) and -pi/2 (spin down) with respect to the circuit, respectively. if there is gate or ferromagnetic contact in the circuit, the rashba wave function becomes standing wave form exp(+/- ik(delta)l)sin[k(0)(l-l)], where l is the position coordinate of the gate or contact. unlike the electron without considering the spin, the phase of the rashba plane or standing wave function depends on the direction angle theta of the circuit. the travel velocity of the rashba waves with the wave vector k(1) or k(2) are the same hk(0)/m*. the boundary conditions of the rashba wave functions at the intersection of circuits are given from the continuity of wave functions and the conservation of current density. using the boundary conditions of rashba wave functions we study the transmission and reflection probabilities of rashba electron moving in several structures, and find the interference effects of the two rashba waves with different wave vectors caused by ferromagnetic contact or the gate. lastly we derive the general theory of multiple branches structure. the theory can be used to design various spin polarized devices. |
| WOS关键词 | MESOSCOPIC STRUCTURES |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000276490300003 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2428083 |
| 专题 | 半导体研究所 |
| 通讯作者 | Xia JianBai |
| 作者单位 | 1.Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 2.Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan |
| 推荐引用方式 GB/T 7714 | Liu DuanYang,Xia JianBai,Chang YiaChung. Rashba electron transport in one-dimensional quantum waveguides[J]. Science china-physics mechanics & astronomy,2010,53(1):16-23. |
| APA | Liu DuanYang,Xia JianBai,&Chang YiaChung.(2010).Rashba electron transport in one-dimensional quantum waveguides.Science china-physics mechanics & astronomy,53(1),16-23. |
| MLA | Liu DuanYang,et al."Rashba electron transport in one-dimensional quantum waveguides".Science china-physics mechanics & astronomy 53.1(2010):16-23. |
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来源：半导体研究所
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