Core level analysis of the surface charge density wave transition in Sn/Ge(111)

被引：30

作者：

Kidd, TE

Miller, T

Chiang, TC

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

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

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.83.2789

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Photoemission from the surface charge density wave (CDW) system Sn/Ge(111) yields a surprisingly broad Sn core level line shape at room temperature. Our study shows that it consists of three components, one associated with the normal phase and the other two associated with the CDW phase. While only the CDW phase is observed at low temperatures, both phases are present at room temperature. This is due to a 2% defect population within the Sn layer, giving rise to a remnant CDW phase above the transition temperature.

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页码：2789 / 2792

页数：4

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