Tuning of the two electron states in quantum rings through the spin-orbit interaction
文献类型:期刊论文
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作者 | Liu Y (Liu Y.); Cheng F (Cheng F.); Li XJ (Li X. J.); Peeters FM (Peeters F. M.); Chang K (Chang Kai); Chang, K, Chinese Acad Sci, Inst Semicond, SKLSM, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: kchang@semi.ac.cn |
刊名 | physical review b
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出版日期 | 2010 ; 2010 |
卷号 | 82期号:4页码:art. no. 045312 |
关键词 | GATE CONTROL Gate Control Spintronics Resonance Energy Layers Dot SPINTRONICS RESONANCE ENERGY LAYERS DOT |
通讯作者 | chang, k, chinese acad sci, inst semicond, sklsm, pob 912, beijing 100083, peoples r china. 电子邮箱地址: kchang@semi.ac.cn |
合作状况 | 国际 |
英文摘要 | the effect of the coulomb interaction on the energy spectrum and anisotropic distribution of two electron states in a quantum ring in the presence of rashba spin-orbit interaction (rsoi) and dresselhaus soi (dsoi) is investigated in the presence of a perpendicular magnetic field. we find that the interplay between the rsoi and dsoi makes the single quantum ring behaves like a laterally coupled quantum dot and the interdot coupling can be tuned by changing the strengths of the sois. the interplay can lead to singlet-triplet state mixing and anticrossing behavior when the singlet and triplet states meet with increasing magnetic field. the two electron ground state displays a bar-bell-like spatial anisotropic distribution in a quantum ring at a specific crystallographic direction, i.e., [110] or [1 (1) over bar0], which can be switched by reversing the direction of the perpendicular electric field. the ground state exhibits a singlet-triplet state transition with increasing magnetic field and strengths of rsoi and dsoi. an anisotropic electron distribution is predicted which can be detected through the measurement of its optical properties.; The effect of the Coulomb interaction on the energy spectrum and anisotropic distribution of two electron states in a quantum ring in the presence of Rashba spin-orbit interaction (RSOI) and Dresselhaus SOI (DSOI) is investigated in the presence of a perpendicular magnetic field. We find that the interplay between the RSOI and DSOI makes the single quantum ring behaves like a laterally coupled quantum dot and the interdot coupling can be tuned by changing the strengths of the SOIs. The interplay can lead to singlet-triplet state mixing and anticrossing behavior when the singlet and triplet states meet with increasing magnetic field. The two electron ground state displays a bar-bell-like spatial anisotropic distribution in a quantum ring at a specific crystallographic direction, i.e., [110] or [1 (1) over bar0], which can be switched by reversing the direction of the perpendicular electric field. The ground state exhibits a singlet-triplet state transition with increasing magnetic field and strengths of RSOI and DSOI. An anisotropic electron distribution is predicted which can be detected through the measurement of its optical properties.; submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-08-17t02:36:02z no. of bitstreams: 1 physrevb.82.045312.pdf: 738132 bytes, checksum: a4497bfb64045caccd3d43be8b7ccfc3 (md5); approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-08-17t02:54:21z (gmt) no. of bitstreams: 1 physrevb.82.045312.pdf: 738132 bytes, checksum: a4497bfb64045caccd3d43be8b7ccfc3 (md5); made available in dspace on 2010-08-17t02:54:21z (gmt). no. of bitstreams: 1 physrevb.82.045312.pdf: 738132 bytes, checksum: a4497bfb64045caccd3d43be8b7ccfc3 (md5) previous issue date: 2010; this work was supported by nsfc under grants no. 60525405 and no. 10874175 and the belgium science policy (iap).; 国际 |
学科主题 | 半导体物理 ; 半导体物理 |
收录类别 | SCI |
资助信息 | this work was supported by nsfc under grants no. 60525405 and no. 10874175 and the belgium science policy (iap). |
语种 | 英语 ; 英语 |
资助机构 | This work was supported by NSFC under Grants No. 60525405 and No. 10874175 and the Belgium Science Policy (IAP). |
公开日期 | 2010-08-17 ; 2010-08-17 ; 2010-10-15 |
源URL | [http://ir.semi.ac.cn/handle/172111/13491] ![]() |
专题 | 半导体研究所_半导体超晶格国家重点实验室 |
通讯作者 | Chang, K, Chinese Acad Sci, Inst Semicond, SKLSM, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: kchang@semi.ac.cn |
推荐引用方式 GB/T 7714 | Liu Y ,Cheng F ,Li XJ ,et al. Tuning of the two electron states in quantum rings through the spin-orbit interaction, Tuning of the two electron states in quantum rings through the spin-orbit interaction[J]. physical review b, PHYSICAL REVIEW B,2010, 2010,82, 82(4):art. no. 045312, Art. No. 045312. |
APA | Liu Y ,Cheng F ,Li XJ ,Peeters FM ,Chang K ,&Chang, K, Chinese Acad Sci, Inst Semicond, SKLSM, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: kchang@semi.ac.cn.(2010).Tuning of the two electron states in quantum rings through the spin-orbit interaction.physical review b,82(4),art. no. 045312. |
MLA | Liu Y ,et al."Tuning of the two electron states in quantum rings through the spin-orbit interaction".physical review b 82.4(2010):art. no. 045312. |
入库方式: OAI收割
来源:半导体研究所
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