Third sound in one and two dimensional modulated structures

T. Komuro, H. Kawashima, K. Shirahama, K. Kono

Research output: Contribution to journalArticle

Abstract

An experimental technique is developed to study acoustic transmission in one and two-dimensional modulated structures by employing third sound of a superfluid helium film. In particular, the Penrose lattice, which is a two-dimensional quasiperiodic structure, is studied. In two dimensions, the scattering of third sound is weaker than in one dimensions. Nevertheless, we find that the transmission spectrum in the Penrose lattice, which is a two-dimensional prototype of the quasicrystal, is observable if the helium film thickness is chosen around 5 atomic layers. The transmission spectra in the Penrose lattice are explained, in terms of dynamical theory of diffraction.

Original languageEnglish
Pages (from-to)359-364
Number of pages6
JournalJournal of Low Temperature Physics
Volume102
Issue number3-4
DOIs
Publication statusPublished - 1996 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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