https://doi.org/10.1140/epjb/s10051-023-00545-8
Regular Article - Computational Methods
Criticality in electronic structure of two graphene layers containing praseodymium superhydride doped molecules
Department of Physics, College of Sciences, Shiraz University, 71454, Shiraz, Iran
Received:
4
January
2023
Accepted:
23
May
2023
Published online:
15
June
2023
Compressed hydrogen-rich compounds have been verified extensively by theoretical scientists for finding high-temperature superconductivity. Although some experiments confirm these findings, their requirement of extremely high critical pressure condition (
) makes them impossible to apply in daily life. The main purpose of present work is to help finding materials with high-temperature superconductivity at low pressures. For this purpose, we consider two graphene sheets with sine form corrugations whose honeycomb patterns are exactly on top of each other with some doped molecules intercalated into sheets. The free energy of valence electrons of total atoms is computed for doped molecules PrH
, PrH
, PrH
, and PrH
, separately. Our calculations indicate a second-order phase transition for PrH at critical temperature 
with applying no external pressure, while no phase transition is observed for other doped molecules. This high-temperature electronic structural stability is 
greater than the 
of the cuprate materials which are the highest-temperature superconductors at low pressures. We guess this phase transition is a superconductivity transition due to the observation of Meissner effect in magnetic susceptibility diagram.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
