|First principles study of magnetism induced by topological frustration of bowtie-shaped graphene nanoflake|
|Ge, Yang; Ji, Jianlong; Shen, Zhizhong; Zhang, Qiang; Jian, Aoqun; Duan, Qianqian; Wang C(王超); Jiang, Jun; Zhang, Wendong; Sang, Shengbo
|摘要||Fine-tuning magnetic states by understanding topological frustration inducing magnetic mechanism should allow greater flexibility for the design of graphene-based spintronics. Based on first-principles calculations, it is predicted that bowtie-shaped graphene nanoflake (GNF) is of spin-polarized ground state exhibiting antiferromagnetic (AFM) ordering between two individual triangular GNFs. It is demonstrated that strength of antiferromagnetic coupling of both symmetric and asymmetric bowtie-shaped GNF displays strong zero-energy-state-orientated behavior due to non-trivial nature of topological frustration, with implications for designing graphene nanostructures with predefined magnetic states. It also proposes a specific example of structures that can serve as nanoscale molecular logic gates composed by asymmetric bowtie-shaped GNFs units, which augment the special antiferromagnetic function through structural configuration of multi-bowtie-shaped GNFs. (C) 2017 Elsevier Ltd. All rights reserved.|
; QUANTUM DOTS
; ARMCHAIR EDGES
; Materials Science
; Materials Science, Multidisciplinary
; National Science Foundation of China(51705354
; Basic Research Project of Shanxi Province(2015021092)
; Graduate student education innovation project of Shanxi(2017SY062)
Ge, Yang,Ji, Jianlong,Shen, Zhizhong,et al. First principles study of magnetism induced by topological frustration of bowtie-shaped graphene nanoflake[J]. CARBON,2018,127:432-436.
Ge, Yang.,Ji, Jianlong.,Shen, Zhizhong.,Zhang, Qiang.,Jian, Aoqun.,...&Sang, Shengbo.(2018).First principles study of magnetism induced by topological frustration of bowtie-shaped graphene nanoflake.CARBON,127,432-436.
Ge, Yang,et al."First principles study of magnetism induced by topological frustration of bowtie-shaped graphene nanoflake".CARBON 127(2018):432-436.