Excitations and spin correlations near the interface of two three-dimensional Heisenberg antiferromagnets
Strongly Correlated Electrons
2019-05-21 v1
Abstract
Magnetic excitations and spin correlations near the interface of two spin- Heisenberg antiferromagnets are considered using the spin-wave approximation. When the interaction between boundary spins differs essentially from exchange constants inside the antiferromagnets, quasi-two-dimensional spin waves appear in the near-boundary region. They eject bulk magnons from this region, thereby dividing the antiferromagnets into areas with different magnetic excitations. The decreased dimensionality of the near-boundary modes leads to amplified nearest-neighbor spin correlations in the interface area.
Keywords
Cite
@article{arxiv.1207.6688,
title = {Excitations and spin correlations near the interface of two three-dimensional Heisenberg antiferromagnets},
author = {N. Voropajeva and A. Sherman},
journal= {arXiv preprint arXiv:1207.6688},
year = {2019}
}
Comments
6 pages, 5 figures