General solutions to spin transportation of electrons through equilateral polygon quantum rings with Rashba spin-orbit interaction

被引:2
作者
Fu Bang [1 ]
Deng Wen-Ji [1 ]
机构
[1] S China Univ Technol, Dept Phys, Guangzhou 510641, Guangdong, Peoples R China
关键词
Rashba spin-orbit interaction; Aharonov-Casher phase; quantum network; quantum transportation; GAS;
D O I
10.7498/aps.59.2739
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Based on the previous work (Li P, Deng W J 2009 Acta Phys. Sin. 58 02713) the quantum transportation of electron through arbitrary equilateral polygons quantum rings with Rashba spin-orbit interaction is studied. With the typical method of quantum network and the Landauer-Buttiker formalism, we analytically solve the scattering problem of electron through equilateral polygonal quantum ring, and obtain the relevant formula for spin transportation conductance The characteristics of the conductance varying with the wave-vector of electron, the strength of spin-orbit interaction, the number of polygon edges, and the ways of leads connecting to quantum rings are discussed. In the limit of infinite number of edges of polygon, we prove that the formula is consistent with the results obtained directly from the circular model of quantum rings.
引用
收藏
页码:2739 / 2745
页数:7
相关论文
共 35 条
[1]   TOPOLOGICAL QUANTUM EFFECTS FOR NEUTRAL PARTICLES [J].
AHARONOV, Y ;
CASHER, A .
PHYSICAL REVIEW LETTERS, 1984, 53 (04) :319-321
[2]   Signatures of spin-related phases in transport through regular polygons [J].
Bercioux, D ;
Frustaglia, D ;
Governale, M .
PHYSICAL REVIEW B, 2005, 72 (11)
[3]   Rashba effect in quantum networks [J].
Bercioux, D ;
Governale, M ;
Cataudella, V ;
Ramaglia, VM .
PHYSICAL REVIEW B, 2005, 72 (07)
[4]   Rashba-effect-induced localization in quantum networks [J].
Bercioux, D ;
Governale, M ;
Cataudella, V ;
Ramaglia, VM .
PHYSICAL REVIEW LETTERS, 2004, 93 (05) :056802-1
[5]   Experimental demonstration of the time reversal Aharonov-Casher effect [J].
Bergsten, Tobias ;
Kobayashi, Toshiyuki ;
Sekine, Yoshiaki ;
Nitta, Junsaku .
PHYSICAL REVIEW LETTERS, 2006, 97 (19)
[6]   Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling [J].
Citro, R. ;
Romeo, F. .
PHYSICAL REVIEW B, 2007, 75 (07)
[7]  
DATTA S, 1997, ELECT TRANSPORT MESO, P57
[8]   Rashba spin-orbit effect on the zero conductance and the magnetoresistance of a quantum ring [J].
Dong, Yan-Kun ;
Li, Yu-Xian .
JOURNAL OF APPLIED PHYSICS, 2008, 103 (11)
[9]   Properties of spin transport of double quantum rings with structures of ferromagnet/semiconductor/ferromagnet [J].
Du Jian ;
Li Chun-Guang ;
Qin Fang .
ACTA PHYSICA SINICA, 2009, 58 (05) :3448-3455
[10]   Spintronic single-qubit gate based on a quantum ring with spin-orbit interaction -: art. no. 033309 [J].
Földi, P ;
Molnár, B ;
Benedict, MG ;
Peeters, FM .
PHYSICAL REVIEW B, 2005, 71 (03)