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  • Title: Spin interference and the Fano effect in electron transport through a mesoscopic ring side-coupled with a quantum dot.
    Author: Ding GH, Dong B.
    Journal: J Phys Condens Matter; 2010 Apr 07; 22(13):135301. PubMed ID: 21389513.
    Abstract:
    We investigate the electron transport through a mesoscopic ring side-coupled with a quantum dot (QD) in the presence of Rashba spin-orbit (SO) interaction. It is shown that both the Fano resonance and the spin interference effects play important roles in the electron transport properties. As the QD level is around the Fermi energy, the total conductance shows a typical Fano resonance line shape. By applying an electrical gate voltage to the QD, the total transmission through the system can be strongly modulated. By threading the mesoscopic ring with a magnetic flux, the time-reversal symmetry of the system is broken, and a spin polarized current can be obtained even though the incident current is unpolarized.
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