The enigmatic mechanism underlying unconventional high-temperature superconductivity, especially the role of lattice dynamics, has remained a subject of debate. Theoretical insights have long been hindered due to the lack of an accurate first-principles description of the lattice dynamics of cuprates. Recently, using the r2SCAN meta-generalized gradient approximation (meta-GGA) functional, we have been able to achieve accurate phonon spectra of an insulating cuprate YBa2Cu3O6 and discover significant magnetoelastic coupling in experimentally interesting Cu–O bond stretching optical modes [Ning et al., Phys. Rev. B 107, 045126 (2023)]. We extend this work by comparing Perdew–Burke–Ernzerhof and r2SCAN performances with corrections from the on-site Hubbard U and the D4 van der Waals (vdW) methods, aiming at further understanding on both the materials science side and the density functional side. We demonstrate the importance of vdW and self-interaction corrections for accurate first-principles YBa2Cu3O6 lattice dynamics. Since r2SCAN by itself partially accounts for these effects, the good performance of r2SCAN is now more fully explained. In addition, the performances of the Tao–Mo series of meta-GGAs, which are constructed in a different way from the strongly constrained and appropriately normed (SCAN) meta-GGA and its revised version r2SCAN, are also compared and discussed.
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14 February 2024
Research Article|
February 09 2024
Comparing first-principles density functionals plus corrections for the lattice dynamics of YBa2Cu3O6
Special Collection:
John Perdew Festschrift
Jinliang Ning
;
Jinliang Ning
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Physics and Engineering Physics, Tulane University
, New Orleans, Louisiana 70118, USA
a)Author to whom correspondence should be addressed: jning1@tulane.edu
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Christopher Lane
;
Christopher Lane
(Writing – review & editing)
2
Theoretical Division, Los Alamos National Laboratory
, Los Alamos, New Mexico 87545, USA
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Bernardo Barbiellini
;
Bernardo Barbiellini
(Writing – review & editing)
3
Department of Physics, School of Engineering Science, LUT University
, FI-53851 Lappeenranta, Finland
4
Department of Physics, Northeastern University
, Boston, Massachusetts 02115, USA
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Robert S. Markiewicz
;
Robert S. Markiewicz
(Writing – review & editing)
4
Department of Physics, Northeastern University
, Boston, Massachusetts 02115, USA
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Arun Bansil
;
Arun Bansil
(Writing – review & editing)
4
Department of Physics, Northeastern University
, Boston, Massachusetts 02115, USA
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Adrienn Ruzsinszky
;
Adrienn Ruzsinszky
b)
(Funding acquisition, Project administration, Resources, Supervision, Writing – review & editing)
1
Department of Physics and Engineering Physics, Tulane University
, New Orleans, Louisiana 70118, USA
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John P. Perdew
;
John P. Perdew
c)
(Funding acquisition, Project administration, Resources, Supervision, Writing – review & editing)
1
Department of Physics and Engineering Physics, Tulane University
, New Orleans, Louisiana 70118, USA
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Jianwei Sun
Jianwei Sun
d)
(Funding acquisition, Project administration, Resources, Software, Supervision, Writing – review & editing)
1
Department of Physics and Engineering Physics, Tulane University
, New Orleans, Louisiana 70118, USA
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a)Author to whom correspondence should be addressed: jning1@tulane.edu
b)
Electronic mail: aruzsin@tulane.edu
c)
Electronic mail: perdew@tulane.edu
d)
Electronic mail: jsun@tulane.edu
J. Chem. Phys. 160, 064106 (2024)
Article history
Received:
October 16 2023
Accepted:
January 15 2024
Citation
Jinliang Ning, Christopher Lane, Bernardo Barbiellini, Robert S. Markiewicz, Arun Bansil, Adrienn Ruzsinszky, John P. Perdew, Jianwei Sun; Comparing first-principles density functionals plus corrections for the lattice dynamics of YBa2Cu3O6. J. Chem. Phys. 14 February 2024; 160 (6): 064106. https://doi.org/10.1063/5.0181349
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