Surface phase transitions of Ge(111)c(2x8) studied by electron energy loss spectroscopy

被引：8
|
作者：
Pasquali, L
DAddato, S
Tagliavini, L
Prandini, AM
Nannarone, S
机构：
[1] UNIV MODENA,DIPARTIMENTO FIS,I-41100 MODENA,ITALY
[2] UNIV FERRARA,IST NAZL FIS MAT,I-44100 FERRARA,ITALY
[3] UNIV FERRARA,DIPARTIMENTO FIS,I-44100 FERRARA,ITALY
来源：
SURFACE SCIENCE | 1997年 / 377卷 / 1-3期
关键词：
electron energy loss spectroscopy; germanium;
D O I：
10.1016/S0039-6028(96)01428-8
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：
We report the results of an electron energy loss spectroscopy (EELS) investigation of the Ge(111)c(2 x 8) surface at different temperatures, covering the three different phases previously observed for this system (c(2 x 8)[-](1 x 1)[-] surface premelting). In order to discriminate between bulk and surface losses, we used different primary beam energies (50-500 eV). Four loss features are revealed to be affected by the temperature. Results are discussed on the basis of a comparison with previous optical spectroscopy data and of the dielectric theory of EELS applied to a slab geometry.
引用
收藏
页码：534 / 538
页数：5
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