کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1867045 | 1038140 | 2012 | 5 صفحه PDF | دانلود رایگان |
A three-quantum-dot spin filter based on nonequilibrium Greenʼs function technique is proposed with external magnetic flux, Rashba spin orbit interaction, and intradot coulomb interaction taken into consideration. Numerical results indicate a spin filter can be made efficient by adjusting external magnetic flux and Rashba spin orbit interaction. Moreover, the formation of a resonance band is discussed through calculation. It is observed that the possibility of transition from one peak to other three peaks in the conductance spectrum increases with increasing interdot coupling strength.
► Investigation of the conductance through a triple quantum dot system.
► Proposal of an efficient spin-filter device.
► Discussion on the formation of the resonance band.
► Study on spin polarization with intradot Coulomb interaction taken into consideration.
Journal: Physics Letters A - Volume 376, Issue 36, 23 July 2012, Pages 2501–2505