Phase coexistence during surface phase transitions

被引：51

作者：

Hannon, JB ^{[1
]}

Heringdorf, FJMZ ^{[1
]}

Tersoff, J ^{[1
]}

Tromp, RM ^{[1
]}

机构：

[1] IBM Corp, Div Res, TJ Watson Res Ctr, Yorktown Heights, NY 10598 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.86.4871

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In contrast to standard thermodynamic models, we observe phase coexistence over an extended temperature range at a first-order surface phase transition. We have measured the domain evolution of the Si(111)-(7 X 7) to (1 X 1)phase transition with temperature, using low-energy electron microscopy. Comparison with detailed, quantitative theoretical predictions shows that coexistence is due to long-range elastic and electrostatic domain interactions. Phase coexistence is predicted to be a universal feature of surface phase transitions.

引用

页码：4871 / 4874

页数：4

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