The effect of perpendicular electric field on temperature-induced plasmon excitations for intrinsic silicene

Jhao Ying Wu, Chiun Yan Lin, Godfrey Gumbs, Ming Fa Lin

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

We use the tight-binding model and the random-phase approximation to investigate the intrinsic plasmon in silicene. At finite temperatures, an undamped plasmon is generated from the interplay between the intraband and the interband-gap transitions. The extent of the plasmon existence range in terms of momentum and temperature, which is dependent on the size of the single-particle-excitation gap, is further tuned by applying a perpendicular electric field. The plasmon becomes damped in the interband-excitation region. A low damped zone is created by the field-induced spin split. The field-dependent plasmon spectrum shows a strong tunability in the plasmon intensity and spectral bandwidth. This could make silicene a very suitable candidate for plasmonic applications.

原文English
頁(從 - 到)51912-51918
頁數7
期刊RSC Advances
5
發行號64
DOIs
出版狀態Published - 2015

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)

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