How to determine Fermi vectors by angle-resolved photoemission

被引：28
|
作者：
Kipp, L
Rossnagel, K
Solterbeck, C
Strasser, T
Schattke, W
Skibowski, M
机构：
[1] Univ Kiel, Inst Expt & Angewandte Phys, D-24098 Kiel, Germany
[2] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 26期
关键词：
D O I：
10.1103/PhysRevLett.83.5551
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Angle-resolved photoemission spectroscopy (ARPES) has been commonly applied to evaluate the shape of Fermi surfaces by employing simple criteria, such as maximum photoemission intensity at the Fermi level or discontinuity in the momentum distribution function, for the determination of the Fermi vector k(F) parallel to the surface; Here we show that these criteria may lead to large uncertainties, in particular for narrow band systems. We develop a reliable method for the determination of Fermi vectors employing high resolution ARPES at different temper;lures. The relevance and accuracy of the method is discussed on data of the quasi-two-dimensional system TiTe2.
引用
收藏
页码：5551 / 5554
页数：4
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