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题名: Spin-polarized electron tunneling through a quantum dot
作者: Lu, Y ;  Sun, QF ;  Lin, TH
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2000
卷号: 34, 期号:4, 页码:583-592
关键词: TIME-DEPENDENT TRANSPORT ;  MAGNETORESISTANCE ;  JUNCTIONS ;  SYSTEMS
学科分类: Physics
通讯作者: Lin, TH , Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China.
部门归属: Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China; Peking Univ, Dept Phys, Beijing 100871, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Nonequilibrium Green's function is used to study spin-polarized electron tunneling through a quantum dot connected to two ferromagnetic electrodes with different orientations via two insulating barriers (FM/I/QD/I/FM). Intra-level Coulomb interaction in the dot is considered. General formula of tunneling current which can be used for arbitrary angle between the two electrodes' magnetizations is derived for both the weak and strong intra-dot interactions. We find that the transport current can be divided into two parts: the current with the spin-flip and the current without the spin-flip, which critically depend on the linewidth function near the Fermi level of the ferromagnetic electrodes. If a magnetic field is applied in the quantum dot, different behaviors will be found for weak and strong interactions.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000166949900002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12847
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:
Lu, Y,Sun, QF,Lin, TH. Spin-polarized electron tunneling through a quantum dot[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2000,34(4):583-592.
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