Ambipolar Nernst effect in NbSe2 -: art. no. 066602

被引：92

作者：

Bel, R

Behnia, K

Berger, H

机构：

[1] Ecole Super Phys & Chim Ind Ville Paris, CNRS, Phys Quant Lab, F-75231 Paris, France

[2] Ecole Polytech Fed Lausanne, Dept Phys, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.91.066602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first study of the Nernst effect in NbSe2 reveals a large quasiparticle contribution with a magnitude comparable and a sign opposite to the vortex signal. Comparing the effect of the charge density wave (CDW) transition on Hall and Nernst coefficients, we argue that this large Nernst signal originates from the thermally induced counterflow of electrons and holes and indicates a drastic change in the electron scattering rate in the CDW state. The results provide new input for the debate on the origin of the anomalous Nernst signal in high-T-c cuprates.

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页数：4

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