Under special kinematic conditions helium atoms impinging upon a crystal surface can be inelastically trapped into a surface bound state and ride the created Rayleigh wave. This special case of phonon-assisted selective adsorption, leading to an atom-phonon bound state (atomic polaron), can explain previously unassigned resonant features observed in published helium atom scattering distributions.
Benedek, G., Echenique, P., Toennies, J., Traeger, F. (2010). Atoms Riding Rayleigh Waves. JOURNAL OF PHYSICS. CONDENSED MATTER, 22(30), 304016-1-304016-11 [10.1088/0953-8984/22/30/304016].
Atoms Riding Rayleigh Waves
BENEDEK, GIORGIO;
2010
Abstract
Under special kinematic conditions helium atoms impinging upon a crystal surface can be inelastically trapped into a surface bound state and ride the created Rayleigh wave. This special case of phonon-assisted selective adsorption, leading to an atom-phonon bound state (atomic polaron), can explain previously unassigned resonant features observed in published helium atom scattering distributions.
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