Fermi-surface-induced lattice distortion in NbTe2 -: art. no. 195114

被引：66

作者：

Battaglia, C ^{[1
]}

Cercellier, H

Clerc, F

Despont, L

Garnier, MG

Koitzsch, C

Aebi, P

Berger, H

Forró, L

Ambrosch-Draxl, C

机构：

[1] Univ Neuchatel, Inst Phys, CH-2000 Neuchatel, Switzerland

[2] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland

[3] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.72.195114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The origin of the monoclinic distortion and domain formation in the quasi-two-dimensional layer compound NbTe2 is investigated. Angle-resolved photoemission shows that the Fermi surface is pseudogapped over large portions of the Brillouin zone. Ab initio calculation of the electron and phonon band structure as well as the static RPA susceptibility lead us to conclude that Fermi surface nesting and electron-phonon coupling play a key role in the lowering of the crystal symmetry and in the formation of the charge density wave phase.

引用

页数：10

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