Artificial phonon-plasmon polariton at the interface of piezoelectric metamaterials and semiconductors

Xuejin Zhang, Dongmin Wu, Cheng Sun, Xiang Zhang

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

We studied a polariton formed at the interface between a piezoelectric metamaterial and a semiconductor or metallic metamaterial. The piezoelectric metamaterial consists of periodically poled domains that has an optical phonon frequency in the terahertz ranges. When the piezoelectric metamaterial is in contact with a semiconductor or metallic metamaterial substrate, the coupling between the metamaterial's optical phonons and the substrate's plasmons results in the formation of a type of artificial surface polariton: phonon-plasmon polariton. The effective dielectric constant of the piezoelectric metamaterial is theoretically derived and the strong dispersion and band gap phenomena of the phonon-plasmon polariton are investigated. The artificial surface phonon-plasmon polariton may offer opportunities in optical science such as acoustic excitation of surface plasmons and vice versa.

Original languageEnglish (US)
Article number085318
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number8
DOIs
StatePublished - Aug 13 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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