Engineering the Reststrahlen band with hybrid plasmon/phonon excitations

W. Streyer, K. Feng, Y. Zhong, A. J. Hoffman, D. Wasserman

Research output: Contribution to journalArticlepeer-review


There has been increasing interest in so-called phononic materials, which can support surface modes known as surface phonon polaritons, consisting of electromagnetic waves coupled to lattice vibrations at the surface of a polar material. While such excitations have a variety of desirable features, they are limited to the spectral range between a material's longitudinal and transverse optical phonon frequencies. In this work, we demonstrate that for materials whose free-carrier concentrations can be controlled, hybrid plasmonic/phononic modes can be supported across a range of frequencies including those generally forbidden by purely phononic materials.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalMRS Communications
Issue number1
StatePublished - Mar 1 2016

ASJC Scopus subject areas

  • Materials Science(all)


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