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

Berthod, Christophe; Fasano, Yanina; Maggio-Aprile, Ivan; Piriou, Alexandre; Giannini, Enrico; Levy de Castro, G.; Fischer, Oystein

doi:10.1103/PhysRevB.88.014528

Scientific article

English

Strong-coupling analysis of scanning tunneling spectra in Bi₂Sr₂Ca₂Cu₃O_10+δ

Contributors

Berthod, Christophe

; Fasano, Yanina; Maggio-Aprile, Ivan; Piriou, Alexandre; Giannini, Enrico

; Levy de Castro, G.; Fischer, Oystein

Published in

Physical review. B, Condensed matter and materials physics, vol. 88, no. 014528

Publication date

2013

Abstract

We study a series of spectra measured in the superconducting state of optimally-doped 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.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

Citation (ISO format)

BERTHOD, Christophe et al. Strong-coupling analysis of scanning tunneling spectra in Bi₂Sr₂Ca₂Cu₃O_10+δ. In: Physical review. B, Condensed matter and materials physics, 2013, vol. 88, n° 014528. doi: 10.1103/PhysRevB.88.014528

Article (Published version)

Identifiers

PID : unige:29036
DOI : 10.1103/PhysRevB.88.014528
arXiv : 1303.2450

Journal ISSN

1098-0121

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371downloads

Creation

01/08/2013 14:47:00

First validation

01/08/2013 14:47:00

Update

14/03/2023 20:21:22

Status update