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Lu, Y; Sun, QF; Lin, TH; Lin, TH , Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China.
Spin-polarized electron tunneling through a quantum dot
Source PublicationCOMMUNICATIONS IN THEORETICAL PHYSICS
KeywordTime-dependent Transport Magnetoresistance Junctions Systems
AbstractNonequilibrium 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.
2000
ISSN0253-6102
Volume34Issue:4Pages:583-592
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12847
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLin, TH , Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China.
Recommended Citation
GB/T 7714
Lu, Y,Sun, QF,Lin, TH,et al. Spin-polarized electron tunneling through a quantum dot[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2000,34(4):583-592.
APA Lu, Y,Sun, QF,Lin, TH,&Lin, TH , Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China..(2000).Spin-polarized electron tunneling through a quantum dot.COMMUNICATIONS IN THEORETICAL PHYSICS,34(4),583-592.
MLA Lu, Y,et al."Spin-polarized electron tunneling through a quantum dot".COMMUNICATIONS IN THEORETICAL PHYSICS 34.4(2000):583-592.
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