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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