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题名: Generalized Holstein model for spin-dependent electron-transfer reactions
作者: Yang, LP ;  Ai, Q ;  Sun, CP
刊名: PHYSICAL REVIEW A
出版日期: 2012
卷号: 85, 期号:3, 页码:32707
关键词: MAGNETORECEPTION ;  COHERENCE ;  MECHANISM ;  MOTION ;  SALTS ;  BIRDS
学科分类: Physics
通讯作者: Yang, LP (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Yang, Li-Ping; Ai, Qing; Sun, C. P.] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Some chemical reactions are described by electron transfer (ET) processes. The underlying mechanism could be modeled as a polaron motion in the molecular crystal-the Holstein model. By taking spin degrees of freedom into consideration, we generalize the Holstein model (molecular crystal model) to microscopically describe an ET chemical reaction. In our model, the electron spins in the radical pair simultaneously interact with a magnetic field and their nuclear-spin environments. By virtue of the perturbation approach, we obtain the chemical reaction rates for different initial states. It is discovered that the chemical reaction rate of the triplet state demonstrates its dependence on the direction of the magnetic field while the counterpart of the singlet state does not. This difference is attributed to the explicit dependence of the triplet state on the direction when the axis is rotated. Our model may provide a possible candidate for the microscopic origin of the avian compass.
资助者: National Natural Science Foundation of China [10935010, 11074261]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000301517000003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15140
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Yang, LP,Ai, Q,Sun, CP. Generalized Holstein model for spin-dependent electron-transfer reactions[J]. PHYSICAL REVIEW A,2012,85(3):32707.
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