Strong-coupling analysis of scanning tunneling spectra in Bi2Sr2Ca2Cu3O10+δ

被引：22

作者：

Berthod, C. ^{[1
]}

Fasano, Y. ^{[1
]}

Maggio-Aprile, I. ^{[1
]}

Piriou, A. ^{[1
]}

Giannini, E. ^{[1
]}

de Castro, G. Levy ^{[1
]}

Fischer, O. ^{[1
]}

机构：

[1] Univ Geneva, DPMC MaNEP, CH-1211 Geneva 4, Switzerland

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

T-C SUPERCONDUCTORS; HIGH-TEMPERATURE SUPERCONDUCTORS; INELASTIC NEUTRON-SCATTERING; DENSITY-OF-STATES; CUPRATE SUPERCONDUCTORS; SPIN EXCITATION; ELECTRONIC-SPECTRA; SINGLE-CRYSTALS; MAGNETIC EXCITATIONS; SYSTEM YBA2CU3O6+X;

D O I：

10.1103/PhysRevB.88.014528

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study a series of spectra measured in the superconducting state of optimally doped Bi2Sr2Ca2Cu3O10+delta (Bi-2223) by scanning tunneling spectroscopy. Each spectrum, as well as the average of spectra presenting the same gap, is fitted using a strong-coupling model taking into account the band structure, the BCS gap, and the interaction of electrons with the spin resonance. After describing our measurements and the main characteristics of the strong-coupling model, we report the whole set of parameters determined from the fits, and we discuss trends as a function of the gap magnitude. We also simulate angle-resolved photoemission spectra, and compare with recent experimental results.

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页数：15

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