Comment on "Anisotropic Scattering Caused by Apical Oxygen Vacancies in Thin Films of Overdoped High-Temperature Cuprate Superconductors"

TL;DR

This paper critiques a previous study on apical oxygen vacancies in overdoped cuprate superconductors, highlighting issues in their approach to understanding defect structures and anisotropic scattering.

Contribution

It provides a critical commentary on the methodology and conclusions of the original work, emphasizing the need for more accurate defect modeling.

Findings

Identifies flaws in the previous approach to defect analysis

Highlights the importance of accurate defect structure modeling

Calls for improved methods in studying anisotropic scattering

Abstract

In Phys. Rev. Lett. 128, 137001 (2022), Wang $\textit{et al}.$ address an important problem in the overdoped cuprates, taking the first steps toward understanding the structure of real defects in these materials, in this case the apical oxygen vacancy, $\mathrm{V}_\mathrm{O}$, that sits immediately above the planar Cu. However, the approach taken has some issues, which we outline in this Comment.