Incomplete charge-density-wave gap opening in orthorhombic Mo4O11

被引：8
|
作者：
Terrasi, A
Marsi, M
Berger, H
Gauthier, F
Forro, L
Margaritondo, G
Kelley, RJ
Onellion, M
机构：
[1] ECOLE POLYTECH FED LAUSANNE, IGA, CH-1015 LAUSANNE, SWITZERLAND
[2] UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA
来源：
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1996年 / 100卷 / 04期
关键词：
D O I：
10.1007/s002570050152
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using angle-resolved photoemission, we report the first observation of an incomplete charge-density-wave (CDW) gap opening for the quasi-two-dimensional material Mo4O11. Our data indicate that the gap opening occurs over a range of 0.5 (A)ngstrom(-1) in the Brillouin zone. The maximum gap opening (Delta(max)) we observe is 60 +/- 10 meV, which leads to a ratio of 2 Delta(max)/kT(CDW) = 14 +/- 6 (T-CDW = transition temperature), well above the weak coupling value of 3.5. Our data suggest that both 1-dimensional and 2-dimensional electronic states may be involved in the gap opening.
引用
收藏
页码：493 / 496
页数：4
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