(2 × 1)-(1 × 1) Phase Transition on Ge(001): Dimer Breakup and Surface Roughening

被引：0
|
作者：
Van Vroonhoven, Esther [1 ]
Zandvliet, Harold J.W. [1 ]
Poelsema, Bene [1 ]
机构：
[1] Solid State Physics Group, MESA+ Research Institute, University of Twente, P.O. Box 217, Enschede, Netherlands
来源：
Physical Review Letters | 2003年 / 91卷 / 11期
关键词：
Dimers - Electron microscopy - Entropy - High temperature effects - Monomers - Phase transitions - Surface roughness;
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学科分类号：
摘要：
A study was performed on (2 × 1)-(1 × 1) phase transition on Ge(001). The physical origin of this transition was the thermally excited breakup of dimers. It was shown that the dimer breakup promoted irreversible surface roughening above 1130 K and reversible surface disorder by step proliferation.
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页码：116102 / 116102
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