Fermi surface reconstruction in the CDW state of CeTe3 observed by photoemission -: art. no. 126405

被引：137

作者：

Brouet, V ^{[1
]}

Yang, WL

Zhou, XJ

Hussain, Z

Ru, N

Shin, KY

Fisher, IR

Shen, ZX

机构：

[1] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[2] Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA

[3] Univ Paris 11, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[4] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[5] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 12期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.126405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

CeTe3 is a layered compound where an incommensurate charge density wave (CDW) opens a large gap (similar or equal to400 meV) in optimally nested regions of the Fermi surface (FS), whereas other sections with poorer nesting remain ungapped. Through angle-resolved photoemission, we identify bands backfolded according to the CDW periodicity. They define FS pockets formed by the intersection of the original FS and its CDW replica. Such pockets illustrate very directly the role of nesting in the CDW formation but they could not be detected so far in a CDW system. We address the reasons for the weak intensity of the folded bands, by comparing different foldings coexisting in CeTe3.

引用

页码：126405 / 1

页数：4

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