期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 4, 页码 1195-1199出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201410031
关键词
defect engineering; half-metallicity; manganese dioxide; nanosheets
资金
- National Natural Science Foundation of China [11079004, 21331005, 11321503, 21401181]
- Chinese Academy of Science [XDB01020300]
- China Postdoctoral Science Foundation [BH2060140013]
- Fundamental Research Funds for the Central University [WK2060190032]
Defect engineering is considered as one of the most efficient strategies to regulate the electronic structure of materials and involves the manipulation of the types, concentrations, and spatial distributions of defects, resulting in unprecedented properties. It is shown that a single-layered MnO2 nanosheet with vacancies is a robust half-metal, which was confirmed by theoretical calculations, whereas vacancy-free single-layered MnO2 is a typical semiconductor. The half-metallicity of the single-layered MnO2 nanosheet can be observed for a wide range of vacancy concentrations and even in the co-presence of Mn and O vacancies. This work enables the development of half-metals by defect engineering of well-established low-dimensional materials, which may be used for the design of next-generation paper-like spintronics.
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