ORDER-DISORDER TRANSITION AND MELTING OF AU(110) SURFACES

被引:2
|
作者
HOSS, A [1 ]
NOLD, M [1 ]
VONBLANCKENHAGEN, P [1 ]
MEYER, O [1 ]
机构
[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST MAT & FESTKORPERFORSCH, W-5170 JULICH 1, GERMANY
关键词
D O I
10.1016/0168-583X(92)95437-V
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The structure of the Au(110) surface was investigated in the temperature range between 60 and 1250 K by the ion channeling and blocking method using an electrostatic energy analyzer. An anomalous temperature dependence of the blocking pattern was found around 680 K which indicates a roughening transition. Above 770 K the number of visible atom layers increases faster with increasing temperature as expected from the temperature dependence of the mean vibrational amplitude. The number of observed disordered (110) layers follows a logarithmic growth law as predicted by the premelting theory and molecular dynamics simulations.
引用
收藏
页码:58 / 63
页数:6
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