Temperature and momentum dependence of the spectral function of the charge-density wave and of the normal alpha phase of Pb/Ge(111)

被引：28

作者：

Goldoni, A ^{[1
]}

Cepek, C ^{[1
]}

Modesti, S ^{[1
]}

机构：

[1] IST NAZL FIS MAT,LAB TECHNOL AVANZATE SUPERF & CATAL,I-34012 TRIESTE,ITALY

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.55.4109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Angle-resolved high-resolution photoemission spectra of the alpha phase of Pb/Ge(111)-(root 3x root 3)R30 degrees have been measured below (100 K) and above (300 and 500 K) the transition to a charge-density-wave insulator state. The spectra strongly differ from those expected from the published local density approximation calculations showing a surface band without dispersion and correlation and fluctuation effects also at high temperature. A pseudogap is observed at 100 K.

引用

页码：4109 / 4112

页数：4

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