Electronic transport through a quantum ring coupled to ferromagnetic leads

doi:10.1088/1674-1056/20/1/017303

中国物理B ›› 2011, Vol. 20 ›› Issue (1): 17303-017303.doi: 10.1088/1674-1056/20/1/017303

Electronic transport through a quantum ring coupled to ferromagnetic leads

孙连亮¹, 迟锋², 黄玲², 赵佳²

(1)College of Science, North China University of Technology, Beijing 100041, China; (2)Department of Physics, Bohai University, Jinzhou 121013, China

收稿日期:2010-07-01 修回日期:2010-09-15 出版日期:2011-01-15 发布日期:2011-01-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10704011), and the Education Department of Liaoning Province, China (Grant No. 2009A031).

Electronic transport through a quantum ring coupled to ferromagnetic leads

Chi Feng(迟锋)^a)†, Sun Lian-Liang(孙连亮)^b), Huang Ling(黄玲)^a) and Zhao Jia(赵佳)^a)

^a Department of Physics, Bohai University, Jinzhou 121013, China; ^b College of Science, North China University of Technology, Beijing 100041, China

Received:2010-07-01 Revised:2010-09-15 Online:2011-01-15 Published:2011-01-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10704011), and the Education Department of Liaoning Province, China (Grant No. 2009A031).

摘要/Abstract

摘要： We study the spin-dependent transport through a one-dimensional quantum ring with taking both the Rashba spin--orbit coupling (RSOC) and ferromagnetic leads into consideration. The linear conductance is obtained by the Green's function method. We find that due to the quantum interference effect arising from the RSOC-induced spin precession phase and the difference in travelling phase between the two arms of the ring, the conductance becomes spin-polarized even in the antiparallel magnetic configuration of the two leads, which is different from the case in single conduction channel system. The linear conductance, the spin polarization and the tunnel magnetoresistance are periodic functions of the two phases, and can be efficiently tuned by the structure parameters.

关键词: quantum ring, rashba spin--orbit interaction, ferromagnetic leads

Abstract: We study the spin-dependent transport through a one-dimensional quantum ring with taking both the Rashba spin–orbit coupling (RSOC) and ferromagnetic leads into consideration. The linear conductance is obtained by the Green's function method. We find that due to the quantum interference effect arising from the RSOC-induced spin precession phase and the difference in travelling phase between the two arms of the ring, the conductance becomes spin-polarized even in the antiparallel magnetic configuration of the two leads, which is different from the case in single conduction channel system. The linear conductance, the spin polarization and the tunnel magnetoresistance are periodic functions of the two phases, and can be efficiently tuned by the structure parameters.

Key words: quantum ring, rashba spin–orbit interaction, ferromagnetic leads

中图分类号: (Ballistic transport)

73.23.Ad

73.63.Hs (Quantum wells)

迟锋, 孙连亮, 黄玲, 赵佳. Electronic transport through a quantum ring coupled to ferromagnetic leads[J]. 中国物理B, 2011, 20(1): 17303-017303.

Chi Feng(迟锋), Sun Lian-Liang(孙连亮), Huang Ling(黄玲) and Zhao Jia(赵佳) . Electronic transport through a quantum ring coupled to ferromagnetic leads[J]. Chin. Phys. B, 2011, 20(1): 17303-017303.

参考文献 47

[1]	Aronov A G and Sharvin Yu V 1987 Rev. Mod. Phys. 59 755%
[2]	Xia J B 1992 Phys. Rev. B 45 3593
[3]	Liu P and Xiong S J 2009 Chin. Phys. B 18 5414
[4]	Meir Y, Gefen Y and Entin W O 1989 Phys. Rev. Lett. 63 798
[5]	Entin W O, Gefen Y, Meir Y and Oreg Y 1992 Phys. Rev. B 45 11 890
[6]	Aronov A G and Lyanda G Y B 1993 Phys. Rev. Lett. 70 343
[7]	Liu D Y, Xia J B and Chang Y C 2009 J. Appl. Phys. 106 093705
[8]	Yi Y S, Qian T Z and Su Z B 1997 Phys. Rev. B 55 10631
[9]	Wu M W, Zhou J and Shi Q W 2004 Appl. Phys. Lett. 85 1012
[10]	Kiselev A A and Kim K W 2003 J. Appl. Phys. 94 4001
[11]	Ionicioiu R and D'Amico I 2003 Phys. Rev. B 67 41307
[12]	Sun Q F, Wang J and Guo H 2005 Phys. Rev. B 71 165310
[13]	Sun Q F and Xie X C 2005 Phys. Rev. B 71 155321
[14]	Sun Q F and Xie X C 2006 Phys. Rev. B 73 235301
[15]	Chi F and Li S S 2006 J. Appl. Phys. 100 113703
[16]	Datta S and Das B 1990 Appl. Phys. Lett. 56 665
[17]	Li S S and Xia J B 2008 Appl. Phys. Lett. 92 022102
[18]	Nitta J, Akazaki T, Takayanagi H and Enoki T 1997 Phys. Rev. Lett. 78 1335
[19]	Moln'ar B, Vasilopoulos P and Peeters F M 2005 Phys. Rev. B 72 075330
[20]	Hirsch J E 1999 Phys. Rev. Lett. 83 1834
[21]	Murakami S, Nagaosa N and Zhang S C 2003 Science 301 1348
[22]	Kato Y K, Myers R C, Gossard A C and Awschalom D D 2004 Science 306 1910
[23]	Wunderlich J, Kaestner B, Sinova J and Jungwirth T 2005 Phys. Rev. Lett. 94 47204
[24]	Xing Y X, Sun Q F and Wang J 2006 Phys. Rev. B 73 205339
[25]	Xing Y X, Sun Q F and Wang J 2007 Phys. Rev. B 75 075324
[26]	Xing Y X, Sun Q F and Wang J 2008 Phys. Rev. B 77 115346
[27]	Chi F and Zheng J 2008 Appl. Phys. Lett. 92 062106
[28]	L"u H F and Guo Y 2007 Appl. Phys. Lett. 91 092128
[29]	Gong W J, Zheng Y S and L"u T Q 2008 Appl. Phys. Lett. 92 042104
[30]	Chi F, Zheng J and Sun L L 2008 Appl. Phys. Lett. 92 172104
[31]	Tsymbal E Y, Mryasov O and Le Clair P R 2003 J. Phys.: Condens. Matter 15 R109
[32]	uZuti'c I, Fabian J and Das Sarma S 2004 Rev. Mod. Phys. 76 323
[33]	Wang R Q and Jiang K M 2009 Chin. Phys. B 18 5443
[34]	Trocha P and Barna's J 2007 Phys. Rev. B 76 165432
[35]	Weymann I 2008 Phys. Rev. B 78 045310
[36]	Chi F, Zeng H and Yuan X Q 2009 Superlatt. Microstruct. 46 523
[37]	van der Wiel W G, De Franceschi S, Elzerman J M, Fujisawa T, Tarucha S and Kouwenhoven L P 2002 Rev. Mod. Phys. 75 1%
[38]	Hanson R, Kouwenhoven L P, Petta J R, Tarucha S and Vandersypen L M K 2007 Rev. Mod. Phys. 79 1217%
[39]	Li S S, Abliz A, Yang F H, Niu Z C, Feng S L and Xia J B 2002 J. Appl. Phys. 92 6662
[40]	Li S S, Abliz A, Yang F H, Niu Z C, Feng S L and Xia J B 2002 J. Appl. Phys. 94 5402
[41]	Li S S and Xia J B 2007 Appl. Phys. Lett. 91 092119
[42]	Hou T, Wu S Q, Bi A H, Yang F B, Chen J F, and Fan M 2009 Chin. Phys. B 18 0783
[43]	Wu S Q, Hou T, Zhao G P, and Yu W L 2010 Chin. Phys. B 19 047202
[44]	Liang F, Yang Y H, Wang J and Chan K S 2009 Europhys. Lett. 87 47004
[45]	Xiao X B, Li X M and Chen Y G 2009 Chin. Phys. B 18 5462
[46]	Chi F and Li S S 2005 Chin. Phys. Lett. 22 2035
[47]	Kubala B and K"onig J 2002 Phys. Rev. B 65 245301 endfootnotesize

Electronic transport through a quantum ring coupled to ferromagnetic leads

Electronic transport through a quantum ring coupled to ferromagnetic leads

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 47

相关文章 15

Metrics

本文评价

推荐阅读 0

[1]	唐翰昭, 要晓腾, 刘建军. Spin transport in a chain of polygonal quantum rings with Dresselhaus spin-orbit coupling[J]. 中国物理B, 2017, 26(11): 117203-117203.
[2]	唐翰昭, 翟利学, 沈曼, 刘建军. Spin transport properties of a Dresselhaus-polygonal quantum ring[J]. 中国物理B, 2015, 24(3): 30303-030303.
[3]	Poonam Silotia, Rakesh Kumar Meena, Vinod Prasad. Two-electron quantum ring in short pulses[J]. , 2015, 24(2): 20303-020303.
[4]	刘建涛, 冯昊, 俞重远, 刘玉敏, 石强, 宋鑫, 张文, 彭益炜. Kinetic Monte Carlo simulations of optimization of self-assembly quantum rings growth strategy based on substrate engineering[J]. Chin. Phys. B, 2013, 22(4): 46801-046801.
[5]	白旭芳, 迟锋, 郑军, 李亦楠 . Generating and reversing spin accumulation by temperature gradient in a quantum dot attached to ferromagnetic leads[J]. 中国物理B, 2012, 21(7): 77301-077301.
[6]	唐翰昭, 翟利学, 刘建军. Transport properties in multi-terminal regular polygonal quantum ring with Rashba spin-orbit coupling[J]. Chin. Phys. B, 2012, 21(12): 120303-120303.
[7]	Woo-Pyo Hong, Seoung-Hwan Park. Size and temperature effects on electric properties of CdTe/ZnTe quantum rings[J]. 中国物理B, 2011, 20(9): 98502-098502.
[8]	贾博雍, 俞重远, 刘玉敏, 韩利红, 姚文杰, 冯昊, 叶寒. Donor-bound electron states in a two-dimensional quantum ring under uniform magnetic field[J]. 中国物理B, 2011, 20(6): 67301-067301.
[9]	薛惠杰, 吕天全, 张红晨, 尹海涛, 崔莲, 贺泽龙. Thermopower in parallel double quantum dots with Rashba spin–orbit interaction[J]. 中国物理B, 2011, 20(2): 27301-027301.
[10]	刘玉敏, 俞重远, 贾博雍, 徐子欢, 姚文杰, 陈智辉, 芦鹏飞, 韩利红. Strain distributions and electronic structure of three-dimensional InAs/GaAs quantum rings[J]. 中国物理B, 2009, 18(11): 4667-4675.
[11]	刘玉敏, 俞重远, 任晓敏. Approximate calculation of electronic energy levels of axially symmetric quantum dot and quantum ring by using energy dependent effective mass[J]. 中国物理B, 2009, 18(1): 9-15.
[12]	吴洪. Effect of electric field on the spectrum and the persistent current of a quantum ring with two electrons (II)---additional effect of a charged impurity[J]. 中国物理B, 2008, 17(8): 3026-3034.
[13]	王传道, 杨富华, 封松林. Electronic states of InAs/GaAs tyre-shape quantum ring[J]. 中国物理B, 2008, 17(8): 3054-3057.
[14]	闫从华, 吴绍全, 黄睿, 孙威立. Spin-flip process through double quantum dots coupled to two half-metallic ferromagnetic leads[J]. 中国物理B, 2008, 17(1): 296-302.
[15]	吴洪, 鲍诚光. Effect of electric field on the electronic spectrum and the persistent current of a quantum ring with two electrons[J]. 中国物理B, 2006, 15(9): 2102-2107.