Phonon confinement in ultrathin nickel films

被引：9

作者：

Melikyan, A ^{[1
]}

Minassian, H ^{[1
]}

机构：

[1] State Engn Univ Armenia, Yerevan 375009, Armenia

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 331卷 / 2-4期

关键词：

D O I：

10.1016/S0009-2614(00)01161-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present an interpretation of the recently obtained data related to the measurements of the sound velocity in ultrathin nickel films. The interpretation is based on the phonon frequency spectrum size quantization, which in turn leads to a decreasing of the phonon group velocity in the confinement direction as the film thickness decreases. A good agreement with the experimental data is obtained for all film thicknesses for which the sound velocity has been measured. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：115 / 118

页数：4

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