PINNED AND UNPINNED STEP DYNAMICS ON VICINAL SILVER (110) SURFACES

被引：18

作者：

HELD, GA

GOODSTEIN, DM

FEENSTRA, RM

RAMSTAD, MJ

NOH, DY

BIRGENEAU, RJ

机构：

[1] MIT,ELECTR RES LAB,CAMBRIDGE,MA 02139

[2] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.48.8458

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present x-ray scattering and scanning-tunneling-microscopy studies of Ag(110) vicinally miscut along the [110BAR] direction. For a clean surface miscut by 1-degrees we find no evidence for phase separation. However, for an impurity concentration of orders less than or similar to 0.001 monolayer we find that the pinning of steps results in a phase separation into flat (110) terraces and densely stepped region. With increasing temperature, the clean surface exhibits a rapid decrease in step-step correlations primarily along the [001] direction.

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页码：8458 / 8461

页数：4

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