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arXiv 0808.3002cond-mat.mtrl-sci
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Pd/W(110)中应力诱导条纹的形成

Stress induced stripe formation in Pd/W(110)

T. O. Mentes, A. Locatelli, L. Aballe, E. Bauer

摘要:

用低能电子显微镜观察到应力诱导的Pd/W(110)亚单层膜的条纹相。的图案的温度依赖性解释的边界自由能和弹性弛豫能的变化,由于边界宽度的增加。当凝聚相的相关长度变得与其周期相当时,条纹被显示为无序,而凝聚物到晶格气体的转变发生在较高的温度下,如低能电子衍射所揭示的。

英文摘要:

A stress-induced stripe phase of submonolayer Pd on W(110) is observed by low-energy electron microscopy. The temperature dependence of the pattern is explained by the change both in the boundary free energy and elastic relaxation energy due to the increasing boundary width. The stripes are shown to disorder when the correlation length of the condensed phase becomes comparable to its period, while the condensate to lattice-gas transition takes place at a higher temperature, as revealed by low-energy electron diffraction.

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