Comment on" Nontrivial Quantum Geometry and the Strength of Electron-Phonon Coupling", arXiv: 2305.02340, J. Yu, CJ Ciccarino, R. Bianco, I. Errea, P. Narang, BA …
WE Pickett - arXiv preprint arXiv:2306.02375, 2023 - arxiv.org
arXiv preprint arXiv:2306.02375, 2023•arxiv.org
The titular manuscript invites a description of the background of research on MgB $ _2 $,
whose unique electron-phonon coupling strength and record superconducting T $ _c $ for
such a material at ambient pressure was demonstrated by the combined efforts of several
groups two decades ago in terms of conventional but highly developed Migdal-Eliashberg
theory. This Comment provides some of the basic features of the theoretical understanding
of MgB $ _2 $ and draws contrasts with the model of Yu {\it et al.}
whose unique electron-phonon coupling strength and record superconducting T $ _c $ for
such a material at ambient pressure was demonstrated by the combined efforts of several
groups two decades ago in terms of conventional but highly developed Migdal-Eliashberg
theory. This Comment provides some of the basic features of the theoretical understanding
of MgB $ _2 $ and draws contrasts with the model of Yu {\it et al.}
The titular manuscript invites a description of the background of research on MgB,whose unique electron-phonon coupling strength and record superconducting T for such a material at ambient pressure was demonstrated by the combined efforts of several groups two decades ago in terms of conventional but highly developed Migdal-Eliashberg theory. This Comment provides some of the basic features of the theoretical understanding of MgB and draws contrasts with the model of Yu {\it et al.}
arxiv.org
