Anti-ferromagnetism, spin-phonon interaction and the local-density approximation in high-T$_C$ superconductors
Superconductivity
2016-08-31 v1 Materials Science
Abstract
Results from different sets of band calculations for undoped and doped HgBaCuO show that small changes in localization can lead to very different ground states. The normal LDA results are compared with 'modified' LDA results, in which different linearization energies make the O-p band more localized. The ground states in the normal calculations are far from the anti-ferromagnetic ones, while nearly AFM states are found in the modified calculations. The proximity of an AFM state in the doped system leads to increased , and the modified band structure has favorable conditions for spin-phonon coupling and superconductivity mediated by spin fluctuations.
Keywords
Cite
@article{arxiv.cond-mat/0403103,
title = {Anti-ferromagnetism, spin-phonon interaction and the local-density approximation in high-T$_C$ superconductors},
author = {T. Jarlborg},
journal= {arXiv preprint arXiv:cond-mat/0403103},
year = {2016}
}
Comments
4 pages, 2 figs., Accepted in J. Physics: Condensed Matter as a letter