Anomalous dissipation in the mixed state of underdoped cuprates close to the superconductor-insulator boundary

被引：26

作者：

Capan, C

Behnia, K

Li, ZZ

Raffy, H

Marin, C

机构：

[1] Ecole Super Phys & Chim Ind Ville Paris, CNRS, UPR 5, Phys Quant Lab, F-75231 Paris, France

[2] Univ Paris 11, CNRS, UMR 8502, Phys Solides Lab, F-91405 Orsay, France

[3] Comm Energie Atom, DRFMC, SPSMS, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.67.100507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a comparative study of Nernst effect and resistivity in underdoped samples of Bi2Sr2CuO6+delta and La2-xSrxCuO4. The Nernst effect presents a peak in a region of the H-T diagram where resistivity shows a nonmetallic temperature dependence. Our results illustrate that the mechanism of dissipation in the mixed state of underdoped cuprates is poorly understood. Large quantum superconducting fluctuations and vanishing vortex viscosity are among suggested explanations for an enhanced Nernst signal close to the superconductor-insulator boundary.

引用

页数：4

共 31 条

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