The Intrinsic Ferromagnetism in a MnO2 Monolayer

The Mn atom, because of its special electronic configuration of 3d54s2, has been widely used as a dopant in various two-dimensional (2D) monolayers such as graphene, BN, silicene and transition metal dichalcogenides (TMDs). The distributions of doped Mn atoms in these systems are highly sensitive to...

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Bibliographic Details
Published inThe journal of physical chemistry letters Vol. 4; no. 20; pp. 3382 - 3386
Main Authors Kan, M, Zhou, J, Sun, Q, Kawazoe, Y, Jena, P
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 17.10.2013
Subjects
Surfaces, Interfaces, Porous Materials, and Catalysis
magnetism
coupling
spintronics
nanosheet
Curie temperature
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Summary:The Mn atom, because of its special electronic configuration of 3d54s2, has been widely used as a dopant in various two-dimensional (2D) monolayers such as graphene, BN, silicene and transition metal dichalcogenides (TMDs). The distributions of doped Mn atoms in these systems are highly sensitive to the synthesis process and conditions, thus suffering from problems of low solubility and surface clustering. Here we show for the first time that the MnO2 monolayer, synthetized 10 years ago, where Mn ions are individually held at specific sites, exhibits intrinsic ferromagnetism with a Curie temperature of 140 K, comparable to the highest T C value achieved experimentally for Mn-doped GaAs. The well-defined atomic configuration and the intrinsic ferromagnetism of the MnO2 monolayer suggest that it is superior to other magnetic monolayer materials.
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ISSN:1948-7185
1948-7185
DOI:10.1021/jz4017848