Peculiarities of Tamm states formed in degenerate photonic band gaps

A. M. Merzlikin, A. P. Vinogradov, A. N. Lagarkov, M. Levy, D. J. Bergman, Y. M. Strelniker

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The structure of the Tamm state localized at the interface between anisotropic magnetophotonic crystal (anisotropic MPC) and a photonic crystal (PC) made of isotropic dielectrics is studied. It is shown that if the frequency of this state appears within the degenerate band gap then its structure qualitatively differs from the structure of a well-known Tamm state localized at the interface between two one-dimensional PC made of isotropic materials. Since inside the degenerate BG the real part of the Bloch wavenumber differs from the Brillouin value, two Bloch waves with different signs in the real part of the wavenumber and the same sign in the imaginary part have different input impedance values. Moreover, contrary to the case of a PC made of isotropic materials the impedance of each Bloch wave is a tensor. As a consequence to construct a surface state at least three evanescent Bloch waves are required. The conditions that determine the Tamm state frequency also change.

Original languageEnglish
Pages (from-to)2986-2989
Number of pages4
JournalPhysica B: Condensed Matter
Volume405
Issue number14
DOIs
StatePublished - 2010

Funding

FundersFunder number
Russia-Israel Science Foundation
National Science FoundationECCS 0856650
United States-Israel Binational Science Foundation
Russian Foundation for Basic Research
Israel Science Foundation

    Keywords

    • Anisotropic materials
    • Magnetic properties
    • Photonic crystal
    • Tamm state

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