自旋电子学
纳米线
材料科学
兴奋剂
量子隧道
凝聚态物理
磁电阻
磁矩
密度泛函理论
磁性半导体
电子结构
纳米技术
铁磁性
光电子学
磁场
计算化学
化学
物理
量子力学
作者
Zhaoxin Dai,Argo Nurbawono,Aihua Zhang,Miao Zhou,Yuan Ping Feng,Ghim Wei Ho,Chun Zhang
摘要
Electronic structures, magnetic properties, and spin-dependent electron transport characteristics of C-doped ZnO nanowires have been investigated via first-principles method based on density functional theory and nonequilibrium techniques of Green's functions. Our calculations show that the doping of carbon atoms in a ZnO nanowire could induce strong magnetic moments in the wire, and the electronic structures as well as the magnetic properties of the system sensitively depend on partial hydrogenation. Based on these findings, we proposed a quasi-1d tunneling magnetic junction made of a partially hydrogenated C-doped ZnO nanowire, which shows a high tunneling magnetoresistance ratio, and could be the building block of a new class of spintronic devices.
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