Surface and image-potential states on Pt(111) probed by two- and three-photon photoemission

被引：18
作者：
Kinoshita, I
Anazawa, T
Matsumoto, Y
机构：
[1] YOKOHAMA CITY UNIV,KANAZAWA KU,YOKOHAMA,KANAGAWA 236,JAPAN
[2] INST MOL SCI,OKAZAKI,AICHI 444,JAPAN
来源：
CHEMICAL PHYSICS LETTERS | 1996年 / 259卷 / 3-4期
关键词：
D O I：
10.1016/0009-2614(96)00829-9
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：
The surface state and image-potential state (IFS) on Pt(111) have been studied by multi-photon photoemission spectroscopy. The intensity of two-photon photoemission by nanosecond laser pulses shows a resonant transition from the sp-derived surface state to the n = 1 IFS at 5.39 +/- 0.03 eV. The three-photon photoelectron spectrum by femtosecond pulses shows two peaks: photoemission from the n = 1 IFS populated by nonresonant transitions and that from the surface state. The surface state is located at 0.19 +/- 0.05 eV below the Fermi level and the n = 1 IFS at 0.78 +/- 0.05 eV below the vacuum level.
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页码：445 / 450
页数：6
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