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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 208-211 |
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Farhadi P, Rezaei B, Bashiri J, Soltani Vala A. Tunable surface states in one-dimensional photonic crystals containing Dirac semimetal cap layer. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :208-211
URL: http://opsi.ir/article-1-2342-en.html
URL: http://opsi.ir/article-1-2342-en.html
1- Faculty of Physics, University of Tabriz
Abstract: (1289 Views)
In this paper, the surface states in a semi-infinite one-dimensional photonic crystal in the presence of Dirac semimetal cap layer has been investigated in terahertz frequency region, using the analytical direct matching procedure within the Kronig-Penny model. We demonstrate that the TE-polarized surface states can be tuned by varying the Fermi energy of Dirac semimetal, which plays an important role in controlling and localization of these surface states. In addition, the effect of the thickness of cap layer on surface states has been investigated. The numerical results show that the Fermi energy and thickness of cap layer have considerable effect on modification of surface states.
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