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Phonon diffraction gratings

✍ Scribed by P. D. Vu; J. R. Olson; R. O. Pohl

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 925 KB
Volume: 507
Category: Article
ISSN: 0003-3804
DOI: 10.1002/andp.19955070103

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✦ Synopsis

Abstract

A two‐dimensional diffraction grating for phonons is described. It scatters thermal phonons strongly when their dominant wavelength is equal to the grating's lattice constant. Through measurements of the Kapitza resistance between the silicon crystal carrying the grating and liquid helium, it is shown that the scattering by the grating is predominantly coherent, as expected for phonon diffraction.

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