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Issue 61, 2016, Issue in Progress
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Plasmons of topological crystalline insulator SnTe with nanostructured patterns

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Abstract

Using the finite-difference time-domain method and density functional theory, we theoretically investigate the plasmons of topological crystalline insulator (TCI) SnTe with nanostructured patterns. Due to the fact that the topological material has an insulating bulk surrounded by topologically protected metallic surfaces, the TCI nanogratings are uniquely described by the core–shell-like model. In contrast to the plasmons of metallic nanoparticles usually found in visible spectra, four plasmon resonances excited on the TCI SnTe nanogratings are numerically observed in the visible-near-infrared (vis-NIR) spectral region, which is in agreement with the theoretical analyses. Furthermore, periodic shifts of resonance wavelengths are achieved with the variation of grating heights. The facile control of the plasmons of TCI nanopatterns in the vis-NIR spectral region may have potential applications in biomedicine, plasmonic nanodevices, and integrated optoelectronic circuits.

Graphical abstract: Plasmons of topological crystalline insulator SnTe with nanostructured patterns

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Publication details

The article was received on 09 Mar 2016, accepted on 31 May 2016 and first published on 02 Jun 2016


Article type: Paper
DOI: 10.1039/C6RA06322E
Citation: RSC Adv., 2016,6, 56042-56047
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    Plasmons of topological crystalline insulator SnTe with nanostructured patterns

    H. Wang, J. Wang, T. Wang, M. Li, L. Zhao, A. Vial and W. Duan, RSC Adv., 2016, 6, 56042
    DOI: 10.1039/C6RA06322E

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