Substrate-induced symmetry breaking in silicene

Chun-Liang Lin*, Ryuichi Arafune, Kazuaki Kawahara, Mao Kanno, Noriyuki Tsukahara, Emi Minamitani, Yousoo Kim, Maki Kawai, Noriaki Takagi

*此作品的通信作者

研究成果: Article同行評審

373 引文 斯高帕斯(Scopus)

摘要

We demonstrate that silicene, a 2D honeycomb lattice consisting of Si atoms, loses its Dirac fermion characteristics due to substrate-induced symmetry breaking when synthesized on the Ag(111) surface. No Landau level sequences appear in the tunneling spectra under a magnetic field, and density functional theory calculations show that the band structure is drastically modified by the hybridization between the Si and Ag atoms. This is the first direct example demonstrating the lack of Dirac fermions in a single layer honeycomb lattice due to significant symmetry breaking.

原文English
文章編號076801
期刊Physical Review Letters
110
發行號7
DOIs
出版狀態Published - 11 2月 2013

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