Electronic structure and Fermi surface of Sn/Cu(100)-(3√2x√2)R45°

被引：11
|
作者：
Martinez-Blanco, J. [1 ,2 ]
Joco, V. [1 ,2 ]
Fujii, J. [3 ]
Segovia, P. [1 ,2 ]
Michel, E. G. [1 ,2 ]
机构：
[1] Univ Madrid, Dept Fis Mat Condensada, Madrid 28049, Spain
[2] Univ Madrid, Inst Univ Ciencia Mat Nicolas Cabrera, Madrid 28049, Spain
[3] CNR INFM, TASC Natl Lab, I-34012 Trieste, Italy
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.77.195418
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The surface phase Sn/Cu(100)-(3 root 2x root 2)R45 degrees exhibits a temperature induced phase transition to a (root 2x root 2)R45 degrees phase above 360 K. We report an angle-resolved photoemission study of the two-dimensional Fermi surface of the low-temperature phase. The Fermi surface is formed by folding of a quasi-two-dimensional surface band and presents three contours. It is characterized by gaps appearing in optimally nested regions of one of the contours, whereas other sections remain ungapped. We address the origin of the folding and of the surface phase transition, which is attributed to the formation of a surface charge density wave.
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页数：8
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