| K/Cu(111)表面功函数的变化 |
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| 引用本文： | 王浭,李海洋,徐亚伯. K/Cu(111)表面功函数的变化[J]. 物理学报, 1990, 39(12): 1989-1993 |
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| 作者姓名： | 王浭 李海洋 徐亚伯 |
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| 作者单位： | (1)浙江大学物理系,杭州310027; (2)浙江大学物理系,杭州310027,中国科学院半导体研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金资助的课题 |
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| 摘 要： | 本工作用俄歇电子能谱(AES)测定K在Cu(111)表面上的覆盖度,用Kelvin探头测量表面功函数的变化,得出功函数依赖于K覆盖度的关系曲线,功函数最大变化值△φmax=3.14eV,功函数最小时的覆盖度θmin=0.18,初始偶极矩p(0)=7.0Debye,实验结果与武汝前等人的理论模型相一致。关键词：
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| 关 键 词： | K Cu 功函数 碱金属 金属表面 |
| 收稿时间： | 1990-02-19 |
THE WORK-FUNCTION CHANGE OF K/Cu(111) |
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| WANG GENG,LI HAI-YANG and XU YA-BO. THE WORK-FUNCTION CHANGE OF K/Cu(111)[J]. Acta Physica Sinica, 1990, 39(12): 1989-1993 |
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| Authors: | WANG GENG LI HAI-YANG XU YA-BO |
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| Abstract: | The work-function change of potassium on the Cu(111) surface was studied. The work-function change was measured by a Kelvin probe. The coverage of potassium on the surface was determined by AES. Maximum work-function change Δφmax=3.14 eV. Initial dipole moment p(0) = 7.0 Debye, The minimum work-function occurs at the coverage θmin= 0.18. The result of this work is consistent with that of the jellium-slab model. |
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