Effects of pressure on the structural, electronic, and elastic properties of superconductor material with perovskite structure YBa2Cu3O7: insights from ab initio calculation

Ahmed Abou El Hassan (), A. Labrag, M. Bghour, M. Khenfouch, H. El Ouaddi, M. Baiboud, Y. El Arfaoui and H. Charkaoui
Additional contact information
Ahmed Abou El Hassan: Ibn Zohr University
A. Labrag: Ibn Zohr University
M. Bghour: Ibn Zohr University
M. Khenfouch: Ibn Zohr University
H. El Ouaddi: Ibn Zohr University
M. Baiboud: Ibn Zohr University
Y. El Arfaoui: Ibn Zohr University
H. Charkaoui: Ibn Zohr University

The European Physical Journal B: Condensed Matter and Complex Systems, 2024, vol. 97, issue 10, 1-13

Abstract: Abstract Superconducting materials' crystal lattices and electronic structures have fascinated the materials science research group. In the present work, we have investigated and discussed the structural, electronic, and elastic properties of single-crystal YBa2Cu3O7 under pressure up to 20 GPa using the first principal calculations based on the density functional theory (DFT). The results showed that this compound's calculated lattice parameters under zero pressure agree with the experimental results. The calculated band structures and the DOS show that YBa2Cu3O7 is metallic. The width of the electronic band increases with pressure, due to the increased overlap of the orbitals. The pressure-dependent single-crystal elastic constants ensure mechanical stability. The calculated value of Poisson’s ratio (n ~ 0.32) suggests that the compound is ductile and that the metallic contribution dominates our material. The variations of anisotropy indices show a monotonic dependence on pressure, indicating that the studied material becomes elastically anisotropic while increasing the pressure. Debye temperature and sound velocity were calculated from the elastic constants and crystal density. They increase systematically with pressure. Our material also appears to have high Debye temperatures, indicating that it may have high thermal conductivity. Finally, we have calculated and discussed the optical properties at ambient pressure (dielectric function, absorption, refractive index, conductivity, loss function, and reflectivity) for both polarization directions [100] and [001]. Graphical abstract

Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1140/epjb/s10051-024-00798-x Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:97:y:2024:i:10:d:10.1140_epjb_s10051-024-00798-x

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/s10051-024-00798-x

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().