Size-dependent detachment-limited decay kinetics of two-dimensional TiN islands on TiN(111)

被引：35

作者：

Kodambaka, S

Petrova, V

Khare, SV

Gall, D

Rockett, A

Petrov, I

Greene, JE

机构：

[1] Univ Illinois, Dept Mat Sci, Urbana, IL 61801 USA

[2] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.89.176102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In situ high-temperature (T-a=1050-1250 K) scanning tunneling microscopy was used to determine the coarsening and decay kinetics of two-dimensional TiN adatom and vacancy islands on atomically smooth TiN(111) terraces. We report the first observation of an abrupt decrease in decay rates, irrespective of T-a, of adatom islands with areas less than a critical value of 1600 Angstrom(2). However, no decay rate transition was observed for vacancy islands. We attribute the size-dependent island decay behavior, which is consistent with detachment-limited kinetics, to anisotropic attachment and detachment barriers.

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页码：1 / 176102

页数：4

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