Comment on "Superconducting order parameter in partially substituted Bi2212 single crystals as measured by the tunneling effect"

TL;DR

This paper discusses the reasons behind discrepancies in tunneling data for Ni- and Zn-doped Bi2212 single crystals, aiming to clarify conflicting experimental results in high-temperature superconductor research.

Contribution

It provides an explanation for the differences observed in tunneling measurements on doped Bi2212 crystals, addressing inconsistencies in previous experimental data.

Findings

Identifies factors causing data discrepancies

Clarifies interpretation of tunneling measurements

Enhances understanding of doping effects in Bi2212

Abstract

In this Comment, we explain the reason for the discrepancy between two sets of tunneling data obtained on Ni- and Zn-doped Bi2212 single crystals (presented in H. Hancotte et al., Phys. Rev. B 55, R3410 (1997) and A. Mourachkine, to be published in J. of Superconductivity, cond-mat/9902355).