Magnetic properties of silicene nanoribbons: A DFT study

Magnetism of two-dimensional (2D) materials with bipartite lattice attracts increasingly attention, but the fundamental Lieb’s theory for predicting the magnetism of bipartite lattices is lack of clear physical picture. Here, an alternative approach to understand the magnetism of 2D materials is pre...

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Bibliographic Details
Published inAIP advances Vol. 7; no. 6; pp. 065004 - 065004-9
Main Authors Liu, Wenhao, Zheng, Jiming, Zhao, Puju, Cheng, Shuguang, Guo, Chongfeng
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.06.2017
AIP Publishing LLC
Subjects
Covalent bonds
Electron spin
Ferromagnetism
Lattices
Magnetic properties
Magnetism
Morphology
Nanoribbons
Silicene
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Summary:Magnetism of two-dimensional (2D) materials with bipartite lattice attracts increasingly attention, but the fundamental Lieb’s theory for predicting the magnetism of bipartite lattices is lack of clear physical picture. Here, an alternative approach to understand the magnetism of 2D materials is presented, in which bipartite lattice is proposed to preserve a potential magnetic order (each sublattice keeps the same spin). The electronic system with sp 2 hybridization achieves this order by covalent sp 2-σ or pz-π bonds concurrently, and proper edge morphology manifests this order. According to our approach, even silicene nanoribbon with armchair edges can show ferromagnetic ground states by proper design. This work would be helpful for designing spintronic devices.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4985139