| Ag（110）表面声子谱的分析型EAM模型计算 |
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| 引用本文： | 杨剑瑜,邓辉球,胡望宇.Ag（110）表面声子谱的分析型EAM模型计算[J].物理学报,2004,53(6):1946-1951. |
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| 作者姓名： | 杨剑瑜 邓辉球 胡望宇 |
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| 作者单位： | 湖南大学应用物理系，长沙 410082 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划(批准号:2001144)资助的课题. |
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| 摘 要： | 应用晶格动力学，结合分析型EAM模型，计算了Ag(110)表面声子频率和振动极化方向，通过比较弛豫与未弛豫表面的计算结果，发现弛豫后的结果与He原子散射实验数据符合得很好，表面振动的极化局域特征符合表面的二维对称性，沿方向的S2和S3表面模也和实验结果—致.
关键词：
表面声子谱
弛豫
EAM
极化
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| 关 键 词： | 表面声子谱 弛豫 EAM 极化 |
| 文章编号： | 1000-3290/2004/53(06)/1946-06 |
| 收稿时间： | 8/4/2003 12:00:00 AM |
| 修稿时间： | 9/9/2003 12:00:00 AM |
Surface phonons on Ag (110): A study by means of analytic embedded-atom method |
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| Yang Jian-Yu,Deng Hui-Qiu and Hu Wang-Yu.Surface phonons on Ag (110): A study by means of analytic embedded-atom method[J].Acta Physica Sinica,2004,53(6):1946-1951. |
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| Authors: | Yang Jian-Yu Deng Hui-Qiu and Hu Wang-Yu |
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| Abstract: | The surface phonons on Ag(110)are studied in the present paper by means of the lattice dynamics and an analytic embedded atom method(EAM). The phonon frequencies and disperse curves with surface relaxation are in good agreement with the data obtained by the helium atom scattering experiments. The polarization and localization of surface vibration are in accord with the two dimensional symmetry in the surface. The S 2 and S 3 surface modes along direction are predicted, which are in agreement with the helium atom scattering experiments. |
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| Keywords: | surface phonons relaxation EAM polarized |
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