Comment on A Dirac-semimetal two-dimensional BeN4: Thickness-dependent electronic and optical properties [Appl. Phys. Lett. 118, 203103 (2021)]

TL;DR

This paper critiques previous first-principles studies on BeN4 monolayer, highlighting inaccuracies in claims about its stability, electronic, optical, and elastic properties, and emphasizes the need for correct analysis of this layered material.

Contribution

It provides a critical review of prior computational results on BeN4 monolayer, correcting misconceptions and emphasizing the importance of accurate first-principles calculations.

Findings

Previous claims about BeN4 monolayer's properties are erroneous

Correct analysis is essential for understanding BeN4's potential applications

Highlights inaccuracies in earlier computational studies

Abstract

Most recently, Bykov and coworkers reported the successful synthesis of layered structure of BeN4. Followed by the experimental report, Bafekry and coworkers published their first-principles results on the stability, electronic, optical and elastic constants of BeN4 monolayer. In the aforementioned work, authors made numerous wrong claims and reported erroneous results.