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Phonon diffraction gratings
Author(s) -
Vu P. D.,
Olson J. R.,
Pohl R. O.
Publication year - 1995
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19955070103
Subject(s) - grating , phonon , diffraction , optics , diffraction grating , materials science , wavelength , scattering , lattice constant , helium , condensed matter physics , physics , optoelectronics , atomic physics
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.