Yang Fu-Bin et al 2008 Chinese Phys. B 17 1383 doi:10.1088/1674-1056/17/4/038
Yang Fu-Bin1, Wu Shao-Quan1, Yan Cong-Hua1, Huang Rui2, Hou Tao1 and Bi Ai-Hua1
Show affiliationsUsing the Keldysh nonequilibrium Green function and equation-of-motion technique, this paper investigates the spin-polarized transport properties of the T-shaped double quantum dots (DQD) coupled to two ferromagnetic leads. There are both Fano effect and Kondo effect in the system, and due to their mutual interaction, the density of states, the current, and the differential conductance of the system depend sensitively on the spin-polarized strength. Thus the obtained results show that this system is provided with excellent spin filtering property, which indicates that this system may be a candidate for spin valve transistors in the spintronics.
72.25.-b Spin polarized transport
75.20.Hr Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions
Condensed matter: electrical, magnetic and optical
Issue 4 (April 2008)
Received 25 August 2007, in final form 28 September 2007
Yang Fu-Bin et al 2008 Chinese Phys. B 17 1383
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