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• W3111307011 abstract "摘要 使用双杂质安德森模型的哈密顿量, 从理论上研究了串型耦合双量子点系统处于自旋阻塞区时的磁输运性质, 并用主方程近似方法求解了哈密顿量. 结果表明, 自旋轨道耦合作用导致的双量子点间的自旋反转隧穿能够解除系统的自旋阻塞. 同时也研究了超精细相互作用导致的在量子点内自旋反转和双量子点之间的自旋关联对系统的磁输运性质的影响, 取得了一些有价值的结果, 并对相关的物理问题进行了讨论. 关键词: 串型耦合双量子点 / 自旋阻塞 / 自旋反转隧穿 / 磁输运性质 Abstract With the two-impurity Anderson model Hamiltonian, we theoretically study the magneto-transport properties of the serially coupled double quantum dot system in a spin blockade regime, and solve Hamiltonian by the master equation approach. We find that the spin flip tunneling between dots due to the spin-orbit coupling can lift the quantum dot spin blocking. We also study the effects of the spin flip of quantum dots due to the hyperfine interactions and the spin exchange interaction on magnetic transport properties of the system. Some valuable results are obtained and the relevant problems are discussed. Keywords: serial double quantum dots / spin blocking / spin flip tunneling / magnetic transport properties 作者及机构信息 邹承役, 吴绍全, 赵国平 1. 四川师范大学 物理与电子工程学院, 成都 610068 基金项目: 国家自然科学基金(批准号: 10747007)、 四川省应用基础研究基金(批准号: 2006J13-155)、 四川省教育厅自然科学研究基金(批准号: 12ZA132)和四川高校科研创新团队建设计划 (批准号: 12TD008)资助的课题. Authors and contacts Zou Cheng-Yi, Wu Shao-Quan, Zhao Guo-Ping 1. School of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610068, China Funds: Project supported by the National Natural Science Foundation of China (Grant No. 10747007), the Major Basic Research Project of Sichuan Province, China (Grant No. 2006J13-155), the Scientific Research Funds of Education Department of Sichuan Province, China (Grant No. 12ZA132) and Construction Plan for Scientific Research Innovation Team of Sichuan Normal Universities, China (Grant No. 12TD008). 参考文献 [1] Ono K, Austing D G, Tokura S 2002 Science 297 1313 [2] Zutic I, Fabian J, DasSarma S 2004 Rev. Mod. Phys. 76 323 [3] Prinz G A 1998 Science 282 1660 [4] Loss D, DiVincenzo D P 1998 Phys. Rev. A 57 120 [5] Hanson R, Burkard G 2007 Phys. Rev. Lett. 98 050502 [6] Prinz G A 1998 Science 282 1660 [7] Wolf S A, Treger D M 2001 Science 294 1488 [8] Wang Z Q 2002 Acta Phys. Sin. 51 1808 (in Chinese) [汪仲清 2002 物理学报 51 1808] [9] Pasupathy A N, Bialczak R C, Martinek J, Grose J E, Donev L A K, McEuen P L, Ralph D C 2004 Science 306 86 [10] Hamaya K, Masubuchi S, Kawamura M, Machida T, Jung M, Shibata K, Hirakawa K, Taniyama T, Ishida S, Arakawa Y 2007 Appl. Phys. Lett. 90 053108 [11] Hamaya K, Kitabatake M, Shibata K, Jung M, Kawamura M, Hirakawa K, Machida T, Taniyama T, Ishida S, Arakawa Y 2007 Appl. Phys. Lett. 91 022107 [12] Hamaya K, Kitabatake M, Shibata K, Jung M, Kawamura M, Hirakawa K, Machida T, Taniyama T, Ishida S, Arakawa Y 2007 Appl. Phys. Lett. 91 232105 [13] Hamaya K, Kitabatake M, Shibata K, Jung M, Kawamura M, Ishida S, Taniyama T, Hirakawa K, Arakawa Y, Machida T 2008 Phys. Rev. B 77 081302(R) [14] Björn K, Jrgen K 2002 Phys. Rev. B 65 245301 [15] Boese D, Hofstetter W, Schoeller H 2002 Phys. Rev. B 66 125315 [16] Ono K, Austing D G, Tokura Y, Tarucha S 2002 Science 297 1313 [17] Ji Y H, Rao J P, Lei M S 2002 Acta Phys. Sin. 51 395 (in Chinese) [嵇英华, 饶建平, 雷敏生 2002 物理学报 51 395] [18] Long C Y, Liu B, Wang X F 2002 Acta Phys. Sin. 51 195 (in Chinese) [龙超云, 刘波, 王心福 2002 物理学报 51 195] [19] Wang Z C 2003 Acta Phys. Sin. 52 2874 (in Chinese) [王忠纯 2003 物理学报 52 2874] [20] Wu S Q, He Z, Yan C H, Sun W L, Wang S J 2006 Acta Phys. Sin. 55 1413 (in Chinese) [吴绍全, 何忠, 阎从华, 孙威立, 王顺金 2006 物理学报 55 1413] [21] Wu S Q 2009 Acta Phys. Sin. 58 4175 (in Chinese) [吴绍全 2009 物理学报 58 4175] 施引文献" @default.
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• W3111307011 title "Mageto-transport properties of serial double quantum dots in the spin blockade regime" @default.
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