ROOM-TEMPERATURE SURFACE-DIFFUSION MECHANISMS OBSERVED BY SCANNING TUNNELING MICROSCOPY

被引：85

作者：

TREVOR, DJ

CHIDSEY, CED

机构：

[1] ATandT Bell Laboratories, Murray Hill

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 1991年 / 9卷 / 02期

关键词：

D O I：

10.1116/1.585504

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Using in situ electrochemical scanning tunneling microscopy, we have discovered several processes that mediate room temperature annealing of the gold (111) surface. These process are shown to be governed by motion of step-edge adatoms and not terrace adatoms. This behavior emphasizes the importance of cooperative effects in low temperature crystal growth. A model of pit motion is proposed based on a random walk of step adatoms. This model predicts that the diffusivity is inversely proportional to the cube of the radius of a pit or island.

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页码：964 / 968

页数：5

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