SPECTROSCOPIC OBSERVATION OF CHARGE-DENSITY-WAVE-INDUCED CHANGES IN THE ELECTRONIC-STRUCTURE OF 2H-TASE2

被引：23

作者：

DARDEL, B ^{[1
]}

GRIONI, M ^{[1
]}

MALTERRE, D ^{[1
]}

WEIBEL, P ^{[1
]}

BAER, Y ^{[1
]}

LEVY, F ^{[1
]}

机构：

[1] ECOLE POLYTECH FED LAUSANNE,PHYS APPL LAB,CH-1015 LAUSANNE,SWITZERLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 33期

关键词：

D O I：

10.1088/0953-8984/5/33/020

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have performed a high-energy-resolution photoelectron spectroscopy investigation of the quasi-two-dimensional material 2H-TaSe2. Temperature-dependent constant-binding energy curves reveal that characteristic changes in the electronic density of states occur continuously through the second-order charge-density-wave (CDW) transition at 122 K. The photoelectron spectra indicate that different parts of the Fermi surface are unequally affected by the CDW and suggest the formation of an energy gap in the GAMMAK direction of the Brillouin zone.

引用

页码：6111 / 6120

页数：10

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