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题名: Spin transport properties of a quantum dot coupled to ferromagnetic leads with noncollinear magnetizations
作者: Zhang, Hao ;  Zhang, Guang-Ming ;  Yu, Lu
刊名: JOURNAL OF PHYSICS-CONDENSED MATTER
出版日期: 2009
卷号: 21, 期号:15, 页码:-
学科分类: Physics
通讯作者: Zhang, H , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
部门归属: [Zhang, H; Yu, L] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhang, GM] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Yu, L] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
英文摘要: A correct general formula for the spin current through an interacting quantum dot coupled to ferromagnetic leads with magnetization at an arbitrary angle. is derived within the framework of the Keldysh formalism. Under asymmetric conditions, the spin current component J(z) may change sign for 0 < theta < pi. It is shown that the spin current and spin tunneling magnetoresistance exhibit different angle dependence in the free and Coulomb blockade regimes. In the latter case, the competition of the spin precession and the spin-valve effect could lead to an anomaly in the angle dependence of the spin current.
资助者: Chinese Academy of Sciences ( CAS); Ministry of Science and Technology ( MOST); NSF-China[10734110]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000264708600013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5344
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zhang, Hao,Zhang, Guang-Ming,Yu, Lu. Spin transport properties of a quantum dot coupled to ferromagnetic leads with noncollinear magnetizations[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2009,21(15):-.
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