中国物理B ›› 2008, Vol. 17 ›› Issue (4): 1383-1388.doi: 10.1088/1674-1056/17/4/038
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
羊富彬1, 吴绍全1, 闫从华1, 侯涛1, 毕爱华1, 黄睿2
Yang Fu-Bin(羊富彬)a)†, Wu Shao-Quan(吴绍全)a), Yan Cong-Hua(闫从华)a),Huang Rui(黄睿)b), Hou Tao(侯涛)a), and Bi Ai-Hua(毕爱华)a)
摘要: Using 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.
中图分类号: (Spin polarized transport)