2-PHOTON PHOTOEMISSION AS A PROBE OF ELECTRON INTERACTIONS WITH ATOMICALLY THIN DIELECTRIC FILMS ON METAL-SURFACES

被引：101

作者：

PADOWITZ, DF ^{[1
]}

MERRY, WR ^{[1
]}

JORDAN, RE ^{[1
]}

HARRIS, CB ^{[1
]}

机构：

[1] LAWRENCE BERKELEY LAB, DIV CHEM SCI, BERKELEY, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.69.3583

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electrons bound to a metal surface by the image potential are seen to persist in the presence of various adsorbates. A new two-photon photoemission spectrometer with high resolution and sensitivity permits precise measurement of adsorbate-induced changes in image state binding energy and dispersion. This provides a unique probe of electron interaction with thin dielectric films. Monolayer xenon on Ag(111) reduced the electron's effective mass. Spectra of alkane multilayers show rich structure with layer-by-layer shifts in binding energy. Bilayers gave evidence of electron localization.

引用

页码：3583 / 3586

页数：4

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