Tailoring phonon band structures with broken symmetry by shaping spatiotemporal modulations of stiffness in a one-dimensional elastic waveguide

Pierre A. Deymier, Vitthal Gole, Pierre Lucas, Jérôme O. Vasseur, Keith Runge

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Spatiotemporal modulations of the elastic properties of materials can be used to break time and parity symmetry of elastic waves. We show that the form of the elastic band structure depends not only on the spatial and temporal periodicity of a spatiotemporal modulation but also on its shape through its Fourier components. We demonstrate that hybridization gaps open from interactions between the Bloch modes of the periodic medium in absence of the temporal variation of the modulation and the combined sinusoidal components of the Fourier decomposition of the periodic modulation.

Original languageEnglish (US)
Article number064304
JournalPhysical Review B
Volume96
Issue number6
DOIs
StatePublished - Aug 17 2017

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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