Two-Dimensional Hexagonal Transition-Metal Oxide for Spintronics
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- 作者：Erjun Kan ; Ming Li ; Shuanglin Hu ; Chuanyun Xiao ; Hongjun Xiang ; Kaiming Deng
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2013
- 出版时间：April 4, 2013
- 年：2013
- 卷：4
- 期：7
- 页码：1120-1125
- 全文大小：398K
- 年卷期：v.4,no.7(April 4, 2013)
- ISSN：1948-7185
文摘
Two-dimensional materials have been the hot subject of studies due to their great potential in applications. However, their applications in spintronics have been blocked by the difficulty in producing ordered spin structures in 2D structures. Here we demonstrated that the ultrathin films of recently experimentally realized wurtzite MnO can automatically transform into a stable graphitic structure with ordered spin arrangement via density functional calculation, and the stability of graphitic structure can be enhanced by external strain. Moreover, the antiferromagnetic ordering of graphitic MnO single layer can be switched into half-metallic ferromagnetism by small hole-doping, and the estimated Curie temperature is higher than 300 K. Thus, our results highlight a promising way toward 2D magnetic materials.