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物理学报. 1990, 39(12): 1989-1993.
doi: 10.7498/aps.39.1989.
K/Cu(111)表面功函数的变化
- 收稿日期: 1990-02-19
- 刊出日期: 1990-06-05
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。
English Abstract
THE WORK-FUNCTION CHANGE OF K/Cu(111)
- Received Date:
19 February 1990
- Published Online:
05 June 1990
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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