Magnetic properties of Co-doped SnO:first-principles calculations  

作　　者：谭兴毅 陈长乐 金克新 曹先胜 邢辉 

机构地区：[1]Shaannxi Key Laboratory of Condensed Matter Structures and Properties,School of Science,Northwestern Polytechnical University

出　　处：《Chinese Physics B》2011年第5期342-346,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 61078057 and 50702046);the Northwestern Polytechnical University "Aoxiang Star" Project;the Northwestern Polytechnical University Foundation for Fundamental Research of China (Grant No. NPU-FFR-JC200821/JC201048)

摘　　要：Based on density functional theory calculations, the electronic and magnetic properties oi Co-duped SnO are investigated. It is found that the spin-polarized state, with a magnetic moment of about 1.0 μB per Co-dopant, is more favorable in energy than the non-spin-polarized state. Moreover, the origin of the ferromagnetism in Co-doped SnO is found to be the double exchange mechanism. Our results indicate that Co-doped SnO is a possible candidate of the u-type snintronics material.Based on density functional theory calculations, the electronic and magnetic properties oi Co-duped SnO are investigated. It is found that the spin-polarized state, with a magnetic moment of about 1.0 μB per Co-dopant, is more favorable in energy than the non-spin-polarized state. Moreover, the origin of the ferromagnetism in Co-doped SnO is found to be the double exchange mechanism. Our results indicate that Co-doped SnO is a possible candidate of the u-type snintronics material.

关 键 词：dilute magnetic semiconductors p-type SnO first-principles calculations 

分 类 号：O469[理学—凝聚态物理]