Recent Brillouin scattering data for the (111) surface of Cr (Sandercock 1978) are compared with the theoretical cross section computed for a semi-infinite anisotropic elastic medium undergoing free-surface boundary conditions. The surface ripple mechanism is found to be responsible for the continuum of phonon states localised between the transverse and longitudinal thresholds.
Acoustic Phonons at the (111) Surface of Chromium / Bortolani, Virginio; F., Nizzoli; Santoro, Giorgio. - In: JOURNAL OF PHYSICS F. METAL PHYSICS. - ISSN 0305-4608. - STAMPA. - 10:(1978), pp. L215-L219. [10.1088/0305-4608/8/10/003]
Acoustic Phonons at the (111) Surface of Chromium
BORTOLANI, Virginio;SANTORO, Giorgio
1978
Abstract
Recent Brillouin scattering data for the (111) surface of Cr (Sandercock 1978) are compared with the theoretical cross section computed for a semi-infinite anisotropic elastic medium undergoing free-surface boundary conditions. The surface ripple mechanism is found to be responsible for the continuum of phonon states localised between the transverse and longitudinal thresholds.
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