Work

Unusual impact of electron-differential phonons in the modeling of the superconductivity of YBa2Cu3Ox

Year: 2025

Type: article

Abstract: Despite numerous scientific mechanisms may impact the pairing mechanism in YBa 2 Cu 3 O x superconductors (YBCO), this research aims to observe its theoretical superconducting transition temperature T c values if only the synergistic effect between charge density wave, selective antiferromagnetic fluctuations, as well as the unusual electron distribution observed in ARPES data is considered. By considering their synergistic impact, we test the effect of an electron-differential phonon model on the T c calculations of YBa 2 Cu 3 O x as a function of pressure for x = 6.5 and 7. Our study not only identifies an imbalanced charge-density wave effect but also explains why the charge-density wave usually occurs around the magnetic copper atoms. Our research reveals that the dynamic behavior of electrons in YBCO might not be accurately captured by the mean-field DFT approximation, as the time-dependent magnetoelectric and electromagnetic conversion could be underestimated in the lattice.

Source: iScience

DOI: 10.1016/j.isci.2025.112127

Authors: Chi Ho Wong, Rolf Lortz

Institutions: Hong Kong Polytechnic University, Hong Kong University of Science and Technology

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,240

Funder: Hong Kong Polytechnic University