Silicene, Si honeycomb lattice, can be grown on Ag (111). Single layer silicene strongly hybridizes with the Ag(111) substrate and breaks its symmetry to obtain Dirac fermions characteristics [1]. Multilayer silicene can be a good candidate for obtaining Dirac fermions characteristics because the interaction between silicene layers should be weaker than that between silicene and the metal substrate. Growth of multilayer silicene on Ag(111) has also been reported in many studies [2, 3]. Several

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... tructure models have been proposed based on the honeycomb lattice [2, 4] but rather recently Shirai et al. claimed that the multilayer silicene is essentially the same as Si(111)√3×√ 3-Ag reconstruction from their tensor LEED analysis [5]. It is an urgent issue to know whether the multilayer silicene is a stack of silicene layers or it is almost identical to Si(111)√3×√3-Ag structure. In this study, we use metastable atom electron spectroscopy (MAES) [6] to clearly reveal 日本物理学会 2015 年秋季大会 概要集 Web版