Spin-phonon interaction in doped high-\(T_C\) superconductors from density functional calculations

DOI10.1016/S0375-9601(02)00022-1zbMATH Open1052.82561arXivcond-mat/0112357MaRDI QIDQ5961193

Publication date: 24 April 2002

Published in: Physics Letters. A (Search for Journal in Brave)

Abstract: Effects of coupling between phonon distortions and stripe-like spin waves in the CuO plane of HgBa

_{2}

CuO

_{4}

are studied by band calculations. Local exchange enhancements depend sensitively on the local structure around Cu sites. Interactions where spin waves have twice as long wave length as phonon waves can lead to a 'dip' in the density of states (DOS) below the Fermi energy,

E_{F}

. This type of interaction is compatible with several seemingly contradictory observations among high-

T_{C}

cuprates, like the isotope effect, anti-ferromagnetic fluctuations, stripes and pseudogaps. It can also account for a large

T_{C}

.

Full work available at URL: https://arxiv.org/abs/cond-mat/0112357

Mathematics Subject Classification ID

Statistical mechanics of superconductors (82D55)

Cites Work

Theory of Superconductivity