Spin-dependent transport through an interacting quantum dot system

doi:10.1088/1674-1056/19/7/077302

Abstract Using an equation of motion technique, we report on a theoretical analysis of transport characteristics of a spin-valve system formed by a quantum dot coupled to ferromagnetic leads, whose magnetic moments are oriented at an angle $\theta$ with respect to each other, and a mesoscopic ring by the Anderson Hamiltonian. We analyse the density of states of this system, and our results reveal that the density of states show some noticeable characteristics depending on the relative angle $\theta$ of magnetic moment M, and the spin-polarised strength P in ferromagnetic leads, and also the magnetic flux $\varPhi$ and the number of lattice sites N_R in the mesoscopic ring. These effects might have some potential applications in spintronics.

Keywords: Kondo effect spin-polarised transport density of states

Accepted manuscript online:

PACS:	73.63.Kv	(Quantum dots)
	72.25.-b	(Spin polarized transport)
	75.30.Cr	(Saturation moments and magnetic susceptibilities)

Fund: Project supported by the Youth Research Fund of Southwest Petroleum University.

Cite this article:

Huang Rui (黄睿), Wu Shao-Quan (吴绍全), Yan Cong-Hua (闫从华) Spin-dependent transport through an interacting quantum dot system 2010 Chin. Phys. B 19 077302

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Spin-dependent transport through an interacting quantum dot system

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