Size scaling in the decay of metastable structures

被引：42

作者：

Fu, ES ^{[1
]}

Johnson, MD ^{[1
]}

Liu, DJ ^{[1
]}

Weeks, JD ^{[1
]}

Williams, ED ^{[1
]}

机构：

[1] UNIV MARYLAND,INST PHYS SCI & TECHNOL,COLLEGE PK,MD 20742

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.77.1091

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The rate of thermal decay of special fabricated structures on Si(111) has been measured for structure sizes ranging from 28 to 50 Angstrom high. The mechanism of the decay via motion of individual steps has been observed directly using scanning tunneling microscopy. The results are consistent with size-scaling predictions of theory, and show that mass transport occurs via a mechanism in which mass is conserved locally. In addition, the theory yields a quantitative prediction of the measured rates with no adjustable parameters when previously measured equilibrium values for step-step interactions and step wandering are used.

引用

页码：1091 / 1094

页数：4

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