Low-energy quasiparticles in cuprate superconductors: A quantitative analysis

被引：170

作者：

Chiao, M

Hill, RW

Lupien, C

Taillefer, L

Lambert, P

Gagnon, R

Fournier, P

机构：

[1] Univ Toronto, Canadian Inst Adv Res, Toronto, ON M5S 1A7, Canada

[2] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[3] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.62.3554

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A residual linear term is observed in the thermal conductivity of optimally doped Bi2Sr2CaCu2O8 at very low temperatures whose magnitude is in excellent agreement with the value expected from Fermi-liquid theory and the d-wave energy spectrum measured by photoemission spectroscopy with no adjustable parameters. This solid basis allows us to make a quantitative analysis of thermodynamic properties at low temperature and establish that thermally excited quasiparticles are a significant, perhaps even the dominant, mechanism in suppressing the superfluid density in cuprate superconductors Bi2Sr2CaCu2O8 and YBa2Cu3O7.

引用

收藏

页码：3554 / 3558

页数：5

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