| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Spin-Flip Process of Polarons in Conjugated Polymers with Magnetic Impurities |
| ZHAO Hui1,2, ZHANG Xu-Ming3, AN Zhong2,4, CHEN Yu-Guang1, WU Chang-Qin2 |
| 1Department of Physics, Tongji University, Shanghai 2000922Department of Physics and Surface Physics Laboratory, Fudan University, Shanghai 2004333National Laboratory for the Infrared Physics, Shanghai Institute of Technology Physics, Chinese Academy of Sciences, Shanghai 2000834College of Physics, Hebei Normal University, Shijiazhuang 050016 |
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ZHAO Hui, ZHANG Xu-Ming, AN Zhong et al 2009 Chin. Phys. Lett. 26 087203 |
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Abstract Being driven by an external electric field, a polaron carrying both spin 1/2 and charge ±e moves at a constant speed in a polymer chain. When the polaron passes through a specific site, which couples to a magnetic impurity via spin-exchange interactions, its spin undergoes a spin-flip process if it is antiparallel to the impurity spin. Our numerical simulation shows that (a) a swap-like operation is performed between the polaron and impurity during the scattering process (b) polarons might be good candidates to be information carriers in the molecular scale.
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| Keywords:
72.80.Le
71.38.Ht
72.25.Rb
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Received: 27 February 2009
Published: 30 July 2009
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| PACS: |
72.80.Le
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(Polymers; organic compounds (including organic semiconductors))
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71.38.Ht
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(Self-trapped or small polarons)
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72.25.Rb
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(Spin relaxation and scattering)
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[1] Wolf S A, Awschalom D D, Buhrman R A, Daughton J M, MolnarS, Roukes M L, Chtchelkanova A Y and Treger D M 2001 Science 294 1488
[2] Prinz G A 1998 Science 282 1660
[3] \v{Zuti\'{c I, Fabian J and Sarma S D 2004 Rev.Mod. Phys. 76 323
[4] Kikkawa J M and Awschalom D D 1999 Nature (London) 397 139
[5] Ekert A and Jozsa R 1996 Rev. Mod. Phys. 68733 Steane A 1998 Rep. Prog. Phys. 61 117 Bennett C H and DiVincenzo D P 2000 Nature (London) 404 247
[6] Loss D and DiVincenzo D P 1998 Phys. Rev. A 57120
[7] Kane B E 1998 Nature (London) 393 133
[8] Petta J R, Johnson A C, Taylor J M, Laird E A, Yacoby A,Lukin M D, Marcus C M, Hanson M P and Gossard A C 2005 Science 309 2180
[9] Meunier T, Vink I T, Willems van Beveren L H, Koppens F HL, Tranitz H P, Wegscheider W, Kouwenhoven L P and Vandersypen L M K2006 Phys. Rev. B 74 195303
[10] Schliemann J, Loss D and MacDonald A H 2001 Phys.Rev. B 63 085311
[11] Burkard G, Loss D and DiVincenzo D P 1999 Phys.Rev. B 59 2070
[12] Awschalom D D and Samarth N 2002 in SemiconductorSpintronics and Quantum Computation (Berlin: Springer-Verlag) pp147--193
[13] Hanson R, Witkamp B, Vardersyoen L M K, Willems vanBeveren L H, Elzerman J M and Kouwenhoven L P 2003 Phys. Rev.Lett. 91 196802
[14] Elzerman J M, Hanson R, Willems van Beveren L H, TaruchaS, Vandersypen L M K and Kouwenhoven L P 2005 Lect. NotesPhys. 667 25
[15] Vrijen R, Yablonovitch E, Wang K, Jiang H W, Balandin A,Roychowdhury V, Mor T and DiVincenzo D 2000 Phys. Rev. A 62 012306
[16] Li Z J, Lin H Q, An Z and Yao K L 1998 J. Chem.Phys. 109 10082
[17] Heeger A J, Kivelson S, Schrieffer J R and Su W P 1998 Rev. Mod. Phys. 60 781 and references therein
[18] Johansson A A and Stafstr\"{om S 2001 Phys. Rev.Lett. 86 3602
[19] Rakhmanova S V and Conwell E M 1999 Appl. Phys.Lett. 75 1518
[20] Wu C Q, Qiu Y, An Z and Nasu K 2003 Phys. Rev. B 68 125416
[21] An Z, Wu C Q and Sun X 2004 Phys. Rev. Lett. 93 216407
[22] Yu J F, Wu C Q, Sun X and Nasu K 2004 Phys. Rev. B 70 064303
[23] Di B, An Z, Li Y C and Wu C Q 2007 Euro. Phys.Lett. 79 17002
[24] Zhao H, Yao Y, An Z, and Wu C Q 2008 Phys. Rev. B 78 035209
[25] Zhao H, Chen Y G, Zhang X M, An Z and Wu C Q 2009 J.Chem. Phys. 130 234908
[26] Hu X D and Sarma S D 2003 Phys. Rev. A 68052310 Hu X D, Sousa R and Sarma S D 2001 Phys. Rev. Lett. 86 918 |
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