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论文类型： 期刊论文

发表时间： 2015-06-01

发表刊物： JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM

收录刊物： SCIE、EI、Scopus

卷号： 28

期号： 6

页面范围： 1755-1758

ISSN号： 1557-1939

关键字： 2D materials; Transition metal silicide; Ferromagnetism; Antiferromagnetism

摘要： Two-dimensional (2D) magnetic materials are important for the potential applications in spintronics and magnetic storage. Twenty transition metal silicide (TMSi2) monolayers have been studied by first-principles calculations. Seven TMSi2 monolayers, i.e., TiSi2, VSi2, CrSi2, MnSi2, FeSi2,NbSi2, and MoSi2, are found to be magnetic. Among them, the formation energies of ferromagnetic TiSi2 and antiferromagnetic FeSi2 monolayers are lower than those of silicene. Meanwhile, a large magnetic moment of 2.512 mu (B) per Mn atom is obtained in monolayer MnSi2 sheet, which has the same formation energy of silicene. Therefore, these three novel magnetic monolayers hold promise in future 2D magnetic devices.