|
|
Spin transport properties of a Dresselhaus-polygonal quantum ring |
Tang Han-Zhao (唐翰昭)a, Zhai Li-Xue (翟利学)a, Shen Man (沈曼)a b, Liu Jian-Jun (刘建军)a c |
a College of Physical Science and Information Engineering and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050024, China;
b Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
c Physics Department, Shijiazhuang University, Shijiazhuang 050035, China |
|
|
Abstract We propose a theoretical method to investigate the effect of the Dresselhaus spin-orbit coupling (DSOC) on the spin transport properties of a regular polygonal quantum ring with an arbitrary number of segments. We find that the DSOC can break the time reversal symmetry of the spin conductance in a polygonal ring and that this property can be used to reverse the spin direction of electrons in the polygon with the result that a pure spin up or pure spin down conductance can be obtained by exchanging the source and the drain. When the DSOC is considered in a polygonal ring with Rashba spin-orbit coupling (RSOC) with symmetric attachment of the leads, the total conductance is independent of the number of segments when both of the two types of spin-orbit coupling (SOC) have the same value. However, the interaction of the two types of SOC results in an anisotropic and shape-dependent conductance in a polygonal ring with asymmetric attachment of the leads. The method we proposed to solve for the spin conductance of a polygon can be generalized to the circular model.
|
Received: 22 September 2014
Revised: 31 October 2014
Accepted manuscript online:
|
PACS:
|
03.65.Nk
|
(Scattering theory)
|
|
72.25.Dc
|
(Spin polarized transport in semiconductors)
|
|
71.70.Ej
|
(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
|
|
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61176089), the Natural Science Foundation of Hebei Province, China (Grant No. A2011205092), and the Foundation of Shijiazhuang University, China (Grant No. XJPT002). |
Corresponding Authors:
Shen Man, Liu Jian-Jun
E-mail: shenman@semi.ac.cn;liujj@mail.hebtu.edu.cn
|
Cite this article:
Tang Han-Zhao (唐翰昭), Zhai Li-Xue (翟利学), Shen Man (沈曼), Liu Jian-Jun (刘建军) Spin transport properties of a Dresselhaus-polygonal quantum ring 2015 Chin. Phys. B 24 030303
|
[1] |
Wolf S A, Awschalom D D, Buhrman R A, Daughton J M, von Molnár S, Roukes M L, Chtchelkanova A Y and Treger D M 2001 Science 294 1488
|
[2] |
Prinz G A 1998 Science 282 1660
|
[3] |
Datta S and Das B 1990 Appl. Phys. Lett. 56 665
|
[4] |
Tsitsishvili E, Lozano G S and Gogolin A O 2004 Phys. Rev. B 70 115316
|
[5] |
Rashba E I 1960 Sov. Phys. Solid State 2 1109
|
[6] |
Bychkov Y A and Rashba E I 1984 J. Phys. C 17 6039
|
[7] |
Dresselhaus G 1955 Phys. Rev. 100 580
|
[8] |
Luo J, Munekata H, Fang F F and Stiles P J 1990 Phys. Rev. B 41 7685
|
[9] |
Matityahu S, Aharony A, Entin-Wohlman O and Tarucha S 2013 New J. Phys. 15 125017
|
[10] |
Wang X F and Vasilopoulos P 2005 Phys. Rev. B 72 165336
|
[11] |
Fuhrer A, Lüescher S, Ihn T, Heinzel T, Ensslin K, Wegscheider W and Bichler M 2001 Nature 413 822
|
[12] |
Aeberhard U, Wakabayashi K and Sigrist M 2005 Phys. Rev. B 72 075328
|
[13] |
Sheng J S and Chang K 2006 Phys. Rev. B 74 235315
|
[14] |
Frustaglia D and Richter K 2004 Phys. Rev. B 69 235310
|
[15] |
Zhai L X, Wang Y and Liu J J 2010 Phys. Lett. A 374 4548
|
[16] |
Bercioux D, Governale M, Cataudella V and Ramaglia V M 2004 Phys. Rev. Lett. 93 056802
|
[17] |
Tang H Z, Zhai L X and Liu J J 2012 Chin. Phys. B 21 120303
|
[18] |
Tang H Z, Zhai L X and Liu J J 2013 J. Appl. Phys. 114 023702
|
[19] |
Bercioux D, Governale M, Cataudella V and Ramaglia V M 2005 Phys. Rev. B 72 075305
|
[20] |
Matityahu S, Aharony A, Entin-Wohlman O and Katsumoto S 2013 Phys. Rev. B 87 205438
|
[21] |
Li P and Deng W J 2009 Acta Phys. Sin. 58 2713 (in Chinese)
|
[22] |
Fu B and Deng W J 2010 Acta Phys. Sin. 59 2739 (in Chinese)
|
[23] |
Xia J B 1992 Phys. Rev. B 45 3593
|
[24] |
Büttiker M, Imry Y, Landauer R and Pinhas S 1985 Phys. Rev. B 31 6207
|
[25] |
Landauer R 1970 Philos. Mag. 21 863
|
[26] |
Sun Q F, Wang J and Guo H 2005 Phys. Rev. B 71 165310
|
[27] |
Matsuyama T, Hu C M, Grundler D, Meier G and Merkt U 2002 Phys. Rev. B 65 155322
|
[28] |
Zhai F and Xu H Q 2005 Phys. Rev. Lett. 94 246601
|
[29] |
Sun Q F and Xie X C 2005 Phys. Rev. B 71 155321
|
[30] |
Chi F and Li S S 2006 J. Appl. Phys. 100 113703
|
[31] |
Chi F, Liu J L and Sun L L 2007 J. Appl. Phys. 101 093704
|
[32] |
Wang M and Chang K 2008 Phys. Rev. B 77 125330
|
[33] |
van Veenhuizen M J, Koga T and Nitta J 2006 Phys. Rev. B 73 235315
|
[34] |
Koga T, Sekine Y and Nitta J 2006 Phys. Rev. B 74 041302R
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|