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4 November 2014 Excitation of topological insulator plasmons by two-dimensional periodic structure
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Plasmons induced by topological insulator (TI) Bi2Se3 micro-ribbon arrays have been experimentally observed recently (Nature nanotechnology 2013, 8, 556-560). In this letter, the surface plasmons excited by TI Bi2Se3 micro-disk arrays are investigated by the methods of full-wave numerical simulations. Numerical simulation results show that thin Bi2Se3 micro-disk arrays can support dipolar plasmon resonances in the terahertz (THz) regimes and the absorptions can be tuned by the structure parameters. In addition to the plasmon mode, two phonon-mode responses are also observed, which confirms the experimental results of micro-ribbon arrays. Our work further proves that TI can be a good candidate of plasmonic platform.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiao Feng Gu, Wei Bing Lu, Xiao Bing Li, Jian Wang, and Jun Hu "Excitation of topological insulator plasmons by two-dimensional periodic structure", Proc. SPIE 9273, Optoelectronic Imaging and Multimedia Technology III, 92733K (4 November 2014);

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