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Spin-dependent transport through an interacting quantum dot | | Ping Zhang
; Qi-Kun Xue
; Yupeng Wang
; X C Xie
; | | Date: |
31 Dec 2002 | | Journal: | Phys Rev Lett, 89 (28 Pt 1), 286803 | | Abstract: | We study the nonequilibrium spin transport through a quantum dot coupled to the magnetic electrodes. A formula for the spin-dependent current is obtained and is applied to discuss the linear conductance and magnetoresistance in the interacting regime. We show that the Kondo resonance and the correlation-induced spin splitting of the dot levels may be systematically controlled by internal magnetization in the electrodes. As a result, when the electrodes are in parallel magnetic configuration, the linear conductance is characterized by two spin-resolved peaks. Furthermore, the presence of the spin-flip process in the dot splits the Kondo resonance into three peaks. | | Source: | PubMed, pmid12513172 | | Services: | Forum | Review | Favorites | |
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