Tunneling spectroscopy of Bi2Sr2CaCu2O8+δ:: Eliashberg analysis of the spectral dip feature -: art. no. 180504

被引：43

作者：

Zasadzinski, JF ^{[1
]}

Coffey, L

Romano, P

Yusof, Z

机构：

[1] IIT, Div Phys, Chicago, IL 60616 USA

[2] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA

[3] Univ Sannio, INFM, I-82100 Benevento, Italy

[4] Univ Sannio, Fac Sci, I-82100 Benevento, Italy

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.68.180504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eliashberg strong-coupling theory, extended to a d-wave symmetric gap function, is used to fit quantitatively a published tunneling spectrum of Bi2Sr2CaCu2O8+delta near optimal doping. The shape, location, and strength of the high-bias spectral dip feature is adequately reproduced using a single-peak alpha(2)F(omega) centered at 36.5 meV. alpha(2)F(omega) also self-consistently determines the measured gap value Delta=32 meV. Possible origins of the bosonic spectrum that give rise to high-T-C superconductivity are discussed.

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