Controllability of ferromagnetism in graphene
Publication in refereed journal

香港中文大學研究人員

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摘要We systematically study magnetic correlations in graphene within Hubbard model on a honeycomb lattice by using quantum Monte Carlo simulations. In the filling region below the Van Hove singularity, the system shows a short-range ferromagnetic correlation, which is slightly strengthened by the on-site Coulomb interaction and markedly by the next-nearest-neighbor hopping integral. The ferromagnetic properties depend on the electron filling strongly, which may be manipulated by the electric gate. Due to its resultant controllability of ferromagnetism, graphene-based samples may facilitate the development of many applications. (c) 2010 American Institute of Physics. [doi:10.1063/1.3485059]
著者Ma TX, Hu FM, Huang ZB, Lin HQ
期刊名稱Applied Physics Letters
出版年份2010
月份9
日期13
卷號97
期次11
出版社AIP Publishing
國際標準期刊號0003-6951
電子國際標準期刊號1077-3118
語言英式英語
關鍵詞ferromagnetic materials; graphene; Hubbard model; magnetic semiconductors; Monte Carlo methods; narrow band gap semiconductors
Web of Science 學科類別Physics; Physics, Applied; PHYSICS, APPLIED

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