点间耦合强度对三耦合量子点系统微分电导的影响

琚鑫; 郭健宏

doi:10.7498/aps.60.057302

摘要

本文利用非平衡格林函数运动方程方法,研究了与两个电极耦合在一起的三耦合量子点系统的微分电导及量子干涉的AB振荡问题.通过理论计算发现,由于量子点上的局域态密度的不同从而导致系统电导或隧穿性质的不同,而且量子点间耦合强度、量子点能级等都会对输运性质产生影响.

关键词:

Using the method of equation of motion of nonequilibrium Green's function, we study the Aharonov-Bohm effect of differential conductance of electronic transport through a triple quantum dot system in which two quantum dots are directly coupled to the electrodes. We found that the conductance or tunneling property depends on the different values of local density of states. Moreover, electron transport through the system can be influenced by inter-dot coupling and energy level of each dot.

Keywords:

作者及机构信息

琚鑫,
郭健宏

1.
首都师范大学物理系,理论物理中心,北京 100048

基金项目: 北京市优秀人才资助项目(批准号:005400602)以及首都师范大学研究生创新基金资助的课题.

Authors and contacts

1.
Center of Theoretical Physics, Department of Physics, Capital Normal University, Beijing 100048, China

参考文献

[1]	Datta S 2005 Quantum Transport Atom to Transistor (Cambridge: Cambridge University Press) p217
[2]	Zhou B, Wu S Q, Sun W L, Zhou X L 2004 Chin. Phys. 13 225
[3]	Ferry D K, Goodnick S M 1997 Transport in Nanostructures (Cambridge: Cambridge University Press) p21
[4]	Yin Y Q, Li H, Ma J N, He Z L, Wang X Z 2009 Acta Phys. Sin. 58 4162 (in Chinese) [尹永琦、李华、马佳宁、贺泽龙、王选章 2009 58 4162]
[5]	Orellana P A, Dominguez-Adame F, Gomez I, Ladron de Guevara M L 2003 Phys. Rev. B 67 085321
[6]	Ireneusz Weymann 2008 Phys. Rev. B 78 045310
[7]	Wang J M, Wang R, Zhang Y P, Liang J Q 2007 Chin. Phys. 16 2075
[8]	Supriyo Datta 1995 Electronic Transport in Mesoscopic Systems 1995 (Cambridge: Cambridge University Press) p139
[9]	Xin Q L, Yi J Y 2007 Phys. Rev. B 75 075114
[10]	Wei Z W 2008 Phys. Rev. B 78 235316
[11]	Mahan G D 2000 Many-Particle Physics 3rd Edition (New York: Kluwer Academic and Plenum Publishers)
[12]	Wang H Y 2007 Theory of Green's Function in Condensed Matter Physics (Beijing: Scientific Press house) p274 [王怀玉 2007 凝聚态物理学中的格林函数理论(北京:科学出版社)第274页]
[13]	An Y P, Yang C L, Wang M S, Ma X G, Wang D H 2010 Acta Phys. Sin. 59 2010 (in Chinese) [安义鹏、杨传路、王美山、马晓光、王德华 2010 59 2010]
[14]	Cornaglia P S, Grempe D R 2005 Phys. Rev. B 71 075305
[15]	Ding G H, Chul Koo Kim, Kyun Nahm 2005 Phys. Rev. B 71 205313
[16]	Yoichi Tanaka, Norio Kawakami 2005 Phys. Rev. B 72 085304
[17]	Zhang G B, Wang S J, Li L 2006 Phys. Rev. B 74 085106
[18]	Yoichi Tanaka, Norio Kawakami, Akira Oguri 2010 Phys. Rev. B 81 075404
[19]	Siqueira E C, Cabrera G G 2010 Phys. Rev. B 81 094526
[20]	Fang T F, Luo H G 2010 Phys. Rev. B 81 113402
[21]	Zimbovskaya N A 2008 Phys. Rev. B 78 035331
[22]	Wu S Q 2009 Acta Phys. Sin. 58 4175 (in Chinese) [吴绍全 2010 58 4175]
[23]	Haug H, Jauho A P 1996 Quantum Kinetics in Transport and Optics of Semiconductors 2nd Edition (Berlin: Spring-Verlag) p157
[24]	Jiang Z T, Sun Q F, Wang Y P 2005 Phys. Rev. B 72 045332
[25]	Ladrón de Guevara M L, Orellana P A 2006 Phys. Rev. B 73 205303
[26]	Shim Y P, Delgado F, Hawrylak P 2009 Phys. Rev. B 80 115305
[27]	Gaudreau L, Sachrajda A S, Studenikin S, Kam A, Delgado F, Shim Y P, Korkusinski M, Hawrylak P 2009 Phys. Rev. B 80 075415

施引文献

[1]	Datta S 2005 Quantum Transport Atom to Transistor (Cambridge: Cambridge University Press) p217
[2]	Zhou B, Wu S Q, Sun W L, Zhou X L 2004 Chin. Phys. 13 225
[3]	Ferry D K, Goodnick S M 1997 Transport in Nanostructures (Cambridge: Cambridge University Press) p21
[4]	Yin Y Q, Li H, Ma J N, He Z L, Wang X Z 2009 Acta Phys. Sin. 58 4162 (in Chinese) [尹永琦、李华、马佳宁、贺泽龙、王选章 2009 58 4162]
[5]	Orellana P A, Dominguez-Adame F, Gomez I, Ladron de Guevara M L 2003 Phys. Rev. B 67 085321
[6]	Ireneusz Weymann 2008 Phys. Rev. B 78 045310
[7]	Wang J M, Wang R, Zhang Y P, Liang J Q 2007 Chin. Phys. 16 2075
[8]	Supriyo Datta 1995 Electronic Transport in Mesoscopic Systems 1995 (Cambridge: Cambridge University Press) p139
[9]	Xin Q L, Yi J Y 2007 Phys. Rev. B 75 075114
[10]	Wei Z W 2008 Phys. Rev. B 78 235316
[11]	Mahan G D 2000 Many-Particle Physics 3rd Edition (New York: Kluwer Academic and Plenum Publishers)
[12]	Wang H Y 2007 Theory of Green's Function in Condensed Matter Physics (Beijing: Scientific Press house) p274 [王怀玉 2007 凝聚态物理学中的格林函数理论(北京:科学出版社)第274页]
[13]	An Y P, Yang C L, Wang M S, Ma X G, Wang D H 2010 Acta Phys. Sin. 59 2010 (in Chinese) [安义鹏、杨传路、王美山、马晓光、王德华 2010 59 2010]
[14]	Cornaglia P S, Grempe D R 2005 Phys. Rev. B 71 075305
[15]	Ding G H, Chul Koo Kim, Kyun Nahm 2005 Phys. Rev. B 71 205313
[16]	Yoichi Tanaka, Norio Kawakami 2005 Phys. Rev. B 72 085304
[17]	Zhang G B, Wang S J, Li L 2006 Phys. Rev. B 74 085106
[18]	Yoichi Tanaka, Norio Kawakami, Akira Oguri 2010 Phys. Rev. B 81 075404
[19]	Siqueira E C, Cabrera G G 2010 Phys. Rev. B 81 094526
[20]	Fang T F, Luo H G 2010 Phys. Rev. B 81 113402
[21]	Zimbovskaya N A 2008 Phys. Rev. B 78 035331
[22]	Wu S Q 2009 Acta Phys. Sin. 58 4175 (in Chinese) [吴绍全 2010 58 4175]
[23]	Haug H, Jauho A P 1996 Quantum Kinetics in Transport and Optics of Semiconductors 2nd Edition (Berlin: Spring-Verlag) p157
[24]	Jiang Z T, Sun Q F, Wang Y P 2005 Phys. Rev. B 72 045332
[25]	Ladrón de Guevara M L, Orellana P A 2006 Phys. Rev. B 73 205303
[26]	Shim Y P, Delgado F, Hawrylak P 2009 Phys. Rev. B 80 115305
[27]	Gaudreau L, Sachrajda A S, Studenikin S, Kam A, Delgado F, Shim Y P, Korkusinski M, Hawrylak P 2009 Phys. Rev. B 80 075415

[1]	代雪峰, 贡同. 铁磁性电极条件下T形双量子点结构中马约拉纳束缚态的解耦现象. , 2024, 73(5): 057301. doi: 10.7498/aps.73.20231434
[2]	吴宇, 蔡绍洪, 邓明森, 孙光宇, 刘文江. 聚噻吩单链量子热输运的第一性原理研究. , 2018, 67(2): 026501. doi: 10.7498/aps.67.20171198
[3]	赵瑞通, 梁瑞生, 王发强. 电子自旋辅助实现光子偏振态的量子纠缠浓缩. , 2017, 66(24): 240301. doi: 10.7498/aps.66.240301
[4]	刘远, 何红宇, 陈荣盛, 李斌, 恩云飞, 陈义强. 氢化非晶硅薄膜晶体管的低频噪声特性. , 2017, 66(23): 237101. doi: 10.7498/aps.66.237101
[5]	陈晓彬, 段文晖. 低维纳米材料量子热输运与自旋热电性质 ——非平衡格林函数方法的应用. , 2015, 64(18): 186302. doi: 10.7498/aps.64.186302
[6]	白继元, 贺泽龙, 李立, 韩桂华, 张彬林, 姜平晖, 樊玉环. 两端线型双量子点分子Aharonov-Bohm干涉仪电输运. , 2015, 64(20): 207304. doi: 10.7498/aps.64.207304
[7]	安兴涛, 刁淑萌. 门电压控制的硅烯量子线中电子输运性质. , 2014, 63(18): 187304. doi: 10.7498/aps.63.187304
[8]	额尔敦朝鲁, 白旭芳, 韩超. 抛物量子点中强耦合磁双极化子内部激发态性质. , 2014, 63(2): 027501. doi: 10.7498/aps.63.027501
[9]	贺泽龙, 白继元, 李鹏, 吕天全. T型双量子点分子Aharonov-Bohm干涉仪的电输运. , 2014, 63(22): 227304. doi: 10.7498/aps.63.227304
[10]	白继元, 贺泽龙, 杨守斌. 平行耦合双量子点分子A-B干涉仪的电荷及其自旋输运. , 2014, 63(1): 017303. doi: 10.7498/aps.63.017303
[11]	段永华, 孙勇, 何建洪, 彭明军, 郭中正. Pb-Mg-Al合金腐蚀机理的电子理论研究. , 2012, 61(4): 046101. doi: 10.7498/aps.61.046101
[12]	安兴涛, 穆惠英, 咸立芬, 刘建军. 量子点双链中电子自旋极化输运性质. , 2012, 61(15): 157201. doi: 10.7498/aps.61.157201
[13]	王艳文, 吴花蕊. 闪锌矿GaN/AlGaN量子点中激子态及光学性质的研究. , 2012, 61(10): 106102. doi: 10.7498/aps.61.106102
[14]	韩清瑶, 汤俊超, 张弨, 王川, 马海强, 于丽, 焦荣珍. 局域态密度对表面等离激元特性影响的研究. , 2012, 61(13): 135202. doi: 10.7498/aps.61.135202
[15]	陈翔, 米贤武. 量子点腔系统中抽运诱导受激辐射与非谐振腔量子电动力学特性的研究. , 2011, 60(4): 044202. doi: 10.7498/aps.60.044202
[16]	尹永琦, 李华, 马佳宁, 贺泽龙, 王选章. 多端耦合量子点分子桥的量子输运特性研究. , 2009, 58(6): 4162-4167. doi: 10.7498/aps.58.4162
[17]	蔡承宇, 周旺民. Ge/Si半导体量子点的应变分布与平衡形态. , 2007, 56(8): 4841-4846. doi: 10.7498/aps.56.4841
[18]	邓宇翔, 颜晓红, 唐娜斯. 量子点环的电子输运研究. , 2006, 55(4): 2027-2032. doi: 10.7498/aps.55.2027
[19]	汤乃云, 陈效双, 陆卫. 尺寸分布对量子点激发态发光性质的影响. , 2005, 54(12): 5855-5860. doi: 10.7498/aps.54.5855
[20]	罗绍凯. 广义经典力学与非完整力学的统一理论. , 2002, 51(7): 1416-1423. doi: 10.7498/aps.51.1416

计量

文章访问数: 8651
PDF下载量: 737
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

搜索

留言板