We study the attenuation rates of acoustic phonons in metallic multilayers by taking account of the band structure of the superlattices (SLs) and therefore extending the bulk metals Pippard model. The attenuations of both the extended and surface phonons in SLs are calculated and compared with the experimental damping rates of the surface vibrations in Al/Ag SLs. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 6]
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机译：我们通过考虑超晶格（SLs）的能带结构研究金属多层体中声子的衰减率，从而扩展了大块金属Pippard模型。计算了SLs中扩展声子和表面声子的衰减，并将其与Al / Ag SLs中表面振动的实验阻尼率进行了比较。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：6]
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