Fine details of the nodal electronic excitations in Bi2Sr2CaCu2O8+δ

被引：22

作者：

Valla, T. ^{[1
]}

Kidd, T. E.

Rameau, J. D.

Noh, H. -J.

Gu, G. D.

Johnson, P. D.

Yang, H. -B.

Ding, H.

机构：

[1] Brookhaven Natl Lab, Condensed Matter & Mat Sci Dept, Upton, NY 11973 USA

[2] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.73.184518

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Very high energy resolution photoemission experiments on high quality samples of optimally doped Bi2Sr2CaCu2O8+delta show new features in the low-energy electronic excitations. A marked change in the binding energy and temperature dependence of the near-nodal scattering rates is observed near the superconducting transition temperature, T-C. The temperature slope of the scattering rate measured at low energy shows a discontinuity at T-C. In the superconducting state, coherent excitations are found with the scattering rates showing a cubic dependence on frequency and temperature. The superconducting gap has a d-wave magnitude with negligible contribution from higher harmonics. Further, the bilayer splitting has been found to be finite at the nodal point.

引用

页数：5

共 21 条

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