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

页码：493 / 496

页数：4

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