Momentum dependent spectral changes induced by the charge density wave in 2H-TaSe2 and the implication on the CDW mechanism

被引：57

作者：

Liu, R ^{[1
]}

Olson, CG

Tonjes, WC

Frindt, RF

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA

[3] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[4] Univ Wisconsin, Ctr Synchrotron Radiat, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.80.5762

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a high energy and high angular resolution angle resolved photoemission study of 2H-TaSe2 at temperatures both above and below the charge-density-wave (CDW) transition. In the normal state, an extended saddle band very close to the Fermi energy was observed. The CDW-induced energy gap is near zero on a well defined Fermi surface and large in the extended saddle band region. The implication of these results on the CDW mechanism is discussed.

引用

页码：5762 / 5765

页数：4

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