Remnant fermi surface in the presence of an underlying instability in layered 1T-TaS2

被引：56

作者：

Pillo, T ^{[1
]}

Hayoz, J

Berger, H

Grioni, M

Schlapbach, L

Aebi, P

机构：

[1] Univ Fribourg, Inst Phys, CH-1700 Fribourg, Switzerland

[2] EPF, Inst Phys Appl, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.83.3494

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report high resolution angle-scanned photoemission and Fermi surface (FS) mapping experiments on the layered transition-metal dichalcogenide 1T-TaS2 in the quasicommensurate (metallic) and the commensurate (insulating) charge-density-wave (CDW) phase. Instead of a nesting induced partially removed FS in the CDW phase we find a pseudogap over large portions of the FS. This remnant FS exhibits the symmetry of the one-particle normal state FS. Possibly, this Mott localization induced transition represents the underlying instability responsible fur the pseudogapped FS.

引用

页码：3494 / 3497

页数：4

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