ENHANCED ANHARMONICITY ON CU(110)

被引：92

作者：

YANG, LQ

RAHMAN, TS

机构：

[1] Department of Physics, Cardwell Hall, Kansas State University, Manhattan

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.67.2327

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a temperature-dependent study of the vibrations and the structure of Cu(110) using molecular-dynamics codes based on potentials obtained from the embedded-atom method. The calculated linewidths and frequencies of the surface phonons and resonances and the mean-square vibrational amplitudes of the atoms indicate a sharp rise in surface anharmonic vibrations at about 600 K. Additionally, vacancies and adatoms begin to appear in the simulations of Cu(110) around 900 K. Comparison is made with experimental data and simulations of Cu(100).

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页码：2327 / 2330

页数：4

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