量子点环嵌入Aharonov-Bohm干涉器中电子的退耦合态及反共振现象

吴丽君; 韩宇; 公卫江; 谭天亚

doi:10.7498/aps.60.107303

摘要

采用Anderson模型哈密顿量和非平衡态格林函数方法对量子点环以不同构型嵌入A-B干涉器中电子输运的退耦合态及反共振现象进行了理论研究. 结果表明,量子点环A-B干涉器的结构对称性以及穿过A-B干涉器的磁通量是诱发退耦合现象的两种物理机理. 耦合量子点结构的对称性越高,体系在相干电子输运过程中表现出来的退耦合及反共振现象越明显. 而且在具有高度对称性的耦合量子点结构中,通过磁场调节体系的结构参数可以分别使第奇数或第偶数分子本征态从电极上退耦合,从而使电子输运电导表现出奇偶对等振荡现象. 这为设计纳米电子开关器件提供了一个新的物理模型.

关键词:

Abstract

Using the Anderson model Hamiltonian and the non-equilibrium Green's function method, the decoupled states and antiresonance presenting in the electronic transport through N-quantum-dot ring embodied in A-B interferometer are studied theoretically. We find that the symmetry of the coupled-dot system and the magnetic flux through the Aharonov-Bohm (A-B) interferometer are two physical mechanisms responsible for the decoupled states. Even-odd parity oscillations occur in linear conductance spectra of such a highly symmetric quantum dot ring, due to even or odd molecular state decoupling from the leads by tuning the structure parameters, i.e., the magnetic flux. The results provide a new model for the designing of the nano-device.

Keywords:

作者及机构信息

1.
辽宁大学物理学院,沈阳 110036;

2.
沈阳理工大学理学院,沈阳 110159;

3.
东北大学理学院,沈阳 110004

基金项目: 国家自然科学基金(批准号: 10904010,10932002)和辽宁省教育厅项目(批准号:2009A309)资助的课题.

Authors and contacts

1.
Department of Physics, Liaoning University, Shenyang 110036, China;

2.
School of science, Shenyang Ligong University, Shenyang 110159, China;

3.
College of Sciences, Northeastern University, Shenyang 110004, China

参考文献

[1]	Lovett B W, Reina J H, Nazir A, Briggs G A 2003 Phys. Rev. B 68 205319
[2]	Zytic I, Fabian J, Sarma S D 2004 Rev. Mod. Phys. 76 323
[3]
[4]
[5]	Xue H B, Zhang H Y, Nie Y H, Li Z J, Liang J Q 2010 Chin. Phys. B 19 047303
[6]
[7]	Wu S Q 2009 Acta Phys. Sin. 58 4175 (in Chinese)[吴绍全 2009 58 4175 ]
[8]	Scott-Thomas J H F, Field S B, Kastner M A, Smith H I, Antoriadis D A 1989 Phys. Rev. Lett. 62 583
[9]
[10]
[11]	Zhang Y, DiCarlo L, McClure D T, Yamamoto M, Tarucha S,Marcus C M, Hanson M P, Gossard A C 2007 Phys. Rev. Lett. 99 036603
[12]
[13]	Kouwenhoven L P, Vaar N C van der, Johnson A T, Kool W, Harmans C J P M, Williamson J G, Staing A A M, Foxon C T Z 1991 Phys. B 85 367
[14]
[15]	Cronenwett S M, Oosterkamp T H, Kouwenhoven L 1998 Science 281 540
[16]	Heary R J, Han J E, Zhu L 2008 Phys. Rev. B 77 115132
[17]
[18]
[19]	Wu S Q, He Z, Yan C H, Chen X W, Sun W L 2006 Acta Phys. Sin. 55 1413 (in Chinese)[吴绍全、何忠、阎从华、谌雄文、孙威立 2006 55 1413 ]
[20]
[21]	Wu S Q, Sun W L, Yu W L, Wang S J 2005 Acta Phys. Sin. 54 2910 (in Chinese)[吴绍全、孙威立、余万伦、王顺金 2005 54 2910 ]
[22]	Sigrist M, Ihn T, Ensslin K, Reinwald M, Wegscheider W 2007 Phys. Rev. Lett. 98 036805
[23]
[24]	Fano U., 1961 Phys. Rev. 124 1866
[25]
[26]
[27]	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 ]
[28]
[29]	Lu H, Lu R, Zhu B F 2005 Phys. Rev. B 71 235320
[30]	Sun Q F, Wang J, Gou H 2005 Phys. Rev. B 71 165310
[31]
[32]
[33]	Wu S Q, Hou T, Zhao G P, Li Z J, Yu W L 2010 Chin. Phys. B 19 047202
[34]	Chen X W, He D J, Wu S Q, Song K H 2006 Acta Phys. Sin. 55 4287 (in Chinese)[谌雄文、贺达江、吴绍全、宋克慧 2006 55 4287 ]
[35]
[36]
[37]	Chen X W, Chen B J, Shi Z G, Song K H 2009 Acta Phys. Sin. 58 2720 (in Chinese)[谌雄文、谌宝菊、施振刚、宋克慧 2009 58 2720 ]
[38]	Voo K-K, Chu C S 2006 Phys. Rev. B 74 155306
[39]
[40]
[41]	Ordonez G, Na K, Kim S 2006 Phys. Rev. A 73 022113
[42]	Wang X R, Wang Y, Sun Z Z 2002 Phys. Rev. B 65 193402
[43]
[44]	Bao K, Zheng Y S 2005 Phys. Rev. B 73 045306
[45]
[46]
[47]	Orellana P A,Domnguez-Adame F, Gez I, Ladrn M L, Guevara de 2003 Phys. Rev. B 67 085321
[48]	Santors L F, Dykman M I 2003 Phys. Rev. B 68 214410
[49]
[50]
[51]	Wu M W, Zhou J, Shi Q W 2004 Appl. Phys. Lett. 85 1012
[52]
[53]	Shi Q W, Zhou J, Wu M W 2004 Appl. Phys. Lett. 85 2547
[54]
[55]	Han Y, Gong W J, Wu H N, Wei G Z 2009 Phys. B 404 2001
[56]
[57]	Gong W J, Han Y, Wei G Z 2009 J. Phys. 21 175801
[58]	Kubala B, Kongin J 2002 Phys. Rev. B 65 245301
[59]
[60]
[61]	Seidl S, Kroner M, Dalgarno P A, Smith J M, Ediger M, Gerardot B D, Garcia J M, Petroff P M, Karrai K, Warburton R J 2005 Phys. Rev. B 72 195339
[62]
[63]	Warburton R J, Durr C S, Karrai K, Kotthaus J P, Medeiros-Ribeiro G, Petroff P M 1997 Phys. Rev. Lett. 79 5282
[64]
[65]	Tae-Suk K, Hershfield S 2002 Phys. Rev. B 65 214526

施引文献

[1]	Lovett B W, Reina J H, Nazir A, Briggs G A 2003 Phys. Rev. B 68 205319
[2]	Zytic I, Fabian J, Sarma S D 2004 Rev. Mod. Phys. 76 323
[3]
[4]
[5]	Xue H B, Zhang H Y, Nie Y H, Li Z J, Liang J Q 2010 Chin. Phys. B 19 047303
[6]
[7]	Wu S Q 2009 Acta Phys. Sin. 58 4175 (in Chinese)[吴绍全 2009 58 4175 ]
[8]	Scott-Thomas J H F, Field S B, Kastner M A, Smith H I, Antoriadis D A 1989 Phys. Rev. Lett. 62 583
[9]
[10]
[11]	Zhang Y, DiCarlo L, McClure D T, Yamamoto M, Tarucha S,Marcus C M, Hanson M P, Gossard A C 2007 Phys. Rev. Lett. 99 036603
[12]
[13]	Kouwenhoven L P, Vaar N C van der, Johnson A T, Kool W, Harmans C J P M, Williamson J G, Staing A A M, Foxon C T Z 1991 Phys. B 85 367
[14]
[15]	Cronenwett S M, Oosterkamp T H, Kouwenhoven L 1998 Science 281 540
[16]	Heary R J, Han J E, Zhu L 2008 Phys. Rev. B 77 115132
[17]
[18]
[19]	Wu S Q, He Z, Yan C H, Chen X W, Sun W L 2006 Acta Phys. Sin. 55 1413 (in Chinese)[吴绍全、何忠、阎从华、谌雄文、孙威立 2006 55 1413 ]
[20]
[21]	Wu S Q, Sun W L, Yu W L, Wang S J 2005 Acta Phys. Sin. 54 2910 (in Chinese)[吴绍全、孙威立、余万伦、王顺金 2005 54 2910 ]
[22]	Sigrist M, Ihn T, Ensslin K, Reinwald M, Wegscheider W 2007 Phys. Rev. Lett. 98 036805
[23]
[24]	Fano U., 1961 Phys. Rev. 124 1866
[25]
[26]
[27]	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 ]
[28]
[29]	Lu H, Lu R, Zhu B F 2005 Phys. Rev. B 71 235320
[30]	Sun Q F, Wang J, Gou H 2005 Phys. Rev. B 71 165310
[31]
[32]
[33]	Wu S Q, Hou T, Zhao G P, Li Z J, Yu W L 2010 Chin. Phys. B 19 047202
[34]	Chen X W, He D J, Wu S Q, Song K H 2006 Acta Phys. Sin. 55 4287 (in Chinese)[谌雄文、贺达江、吴绍全、宋克慧 2006 55 4287 ]
[35]
[36]
[37]	Chen X W, Chen B J, Shi Z G, Song K H 2009 Acta Phys. Sin. 58 2720 (in Chinese)[谌雄文、谌宝菊、施振刚、宋克慧 2009 58 2720 ]
[38]	Voo K-K, Chu C S 2006 Phys. Rev. B 74 155306
[39]
[40]
[41]	Ordonez G, Na K, Kim S 2006 Phys. Rev. A 73 022113
[42]	Wang X R, Wang Y, Sun Z Z 2002 Phys. Rev. B 65 193402
[43]
[44]	Bao K, Zheng Y S 2005 Phys. Rev. B 73 045306
[45]
[46]
[47]	Orellana P A,Domnguez-Adame F, Gez I, Ladrn M L, Guevara de 2003 Phys. Rev. B 67 085321
[48]	Santors L F, Dykman M I 2003 Phys. Rev. B 68 214410
[49]
[50]
[51]	Wu M W, Zhou J, Shi Q W 2004 Appl. Phys. Lett. 85 1012
[52]
[53]	Shi Q W, Zhou J, Wu M W 2004 Appl. Phys. Lett. 85 2547
[54]
[55]	Han Y, Gong W J, Wu H N, Wei G Z 2009 Phys. B 404 2001
[56]
[57]	Gong W J, Han Y, Wei G Z 2009 J. Phys. 21 175801
[58]	Kubala B, Kongin J 2002 Phys. Rev. B 65 245301
[59]
[60]
[61]	Seidl S, Kroner M, Dalgarno P A, Smith J M, Ediger M, Gerardot B D, Garcia J M, Petroff P M, Karrai K, Warburton R J 2005 Phys. Rev. B 72 195339
[62]
[63]	Warburton R J, Durr C S, Karrai K, Kotthaus J P, Medeiros-Ribeiro G, Petroff P M 1997 Phys. Rev. Lett. 79 5282
[64]
[65]	Tae-Suk K, Hershfield S 2002 Phys. Rev. B 65 214526

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