中国物理B ›› 2011, Vol. 20 ›› Issue (5): 57101-057101.doi: 10.1088/1674-1056/20/5/057101

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

谭兴毅, 陈长乐, 金克新, 曹先胜, 邢辉   

  1. Shaannxi Key Laboratory of Condensed Matter Structures and Properties, School of Science, Northwestern Polytechnical University, Xi' an 710072, China
  • 收稿日期:2010-06-07 修回日期:2011-01-11 出版日期:2011-05-15 发布日期:2011-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61078057 and 50702046), the Northwestern Polytechnical University "Aoxiang Star" Project, and the Northwestern Polytechnical University Foundation for Fundamental Research o

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

Tan Xing-Yi (谭兴毅), Chen Chang-Le (陈长乐), Jin Ke-Xin (金克新), Cao Xian-Sheng (曹先胜), Xing Hui (邢辉)   

  1. Shaannxi Key Laboratory of Condensed Matter Structures and Properties, School of Science, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2010-06-07 Revised:2011-01-11 Online:2011-05-15 Published:2011-05-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61078057 and 50702046), the Northwestern Polytechnical University "Aoxiang Star" Project, and the Northwestern Polytechnical University Foundation for Fundamental Research of China (Grant No. NPU-FFR-JC200821/JC201048).

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摘要： Based on density functional theory calculations, the electronic and magnetic properties of Co-doped 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 p-type spintronics material.

Abstract: Based on density functional theory calculations, the electronic and magnetic properties of Co-doped 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 p-type spintronics material.

Key words: dilute magnetic semiconductors, p-type SnO, first-principles calculations

中图分类号:  (Semiconductor compounds)

  • 71.20.Nr
71.20.-b (Electron density of states and band structure of crystalline solids) 74.25.Ha (Magnetic properties including vortex structures and related phenomena)