LONG-RANGE COHERENCE AND MACROSCOPIC PHASE-SEPARATION OF STEPS ON VICINAL SI(111)

被引：23

作者：

NOH, DY

BLUM, KI

RAMSTAD, MJ

BIRGENEAU, RJ

机构：

[1] Department of Physics, Massachusetts Institute of Technology, Cambridge

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.44.10969

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a synchrotron-radiation x-ray-scattering study of a vicinal Si(111) surface misoriented by 3.3-degrees toward the (112BAR) direction. At temperatures above the first-order 7 x 7 to 1 x 1 reconstruction transition temperature the surface contains coherent, thermally rough atomic steps in domains larger than 0.4 x 1-mu-m2. Below this temperature the surface phase separates into macroscopic (111) facets larger than 0.4 x 1-mu-m2, and stepped regions where the step density increases as the temperature is decreased.

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页码：10969 / 10972

页数：4

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