Growth and structure of thin platinum films deposited on Co(0001) studied by low-energy electron diffraction, X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy and scanning tunneling microscopy

被引：12
作者：
Cabeza, GF
Légaré, P
Sadki, A
Castellani, NJ
机构：
[1] Univ Strasbourg 1, CNRS, LERCSI, UMR 7515, F-67087 Strasbourg, France
[2] Univ Nacl Sur, Dept Fis, RA-8000 Bahia Blanca, Buenos Aires, Argentina
来源：
SURFACE SCIENCE | 2000年 / 457卷 / 1-2期
关键词：
cobalt; epitaxy; low energy electron diffraction (LEED); low index single crystal surfaces; photoelectron spectroscopy; platinum; scanning tunneling microscopy; semi-empirical models and model calculations;
D O I：
10.1016/S0039-6028(00)00345-9
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 growth of platinum deposited on Co(0001) at room temperature in the range of submonolayer coverage is described. The evolution of very thin Pt films has been studied using low-energy electron diffraction (LEED), X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy and scanning tunneling microscopy (STM). The LEED patterns suggested a coherent epitaxial growth mode for Pt on Co(0001). Evidence for an island growth mode has been confirmed by STM together with step decoration. However, the second and third monolayers start growing before the completion of the first Pt layer. The electronic structure of the Pt deposits exhibited original properties with low Fermi level density of states and valence-band broadening. This is in agreement with theoretical calculations presented in this work. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：121 / 133
页数：13
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