Surface spin waves in superconducting and insulating ferromagnets
强关联电子
2009-11-11 v1 超导电性
摘要
Surface magnetization waves are studied on a semi-infinite magnetic medium in the perpendicular geometry. Both superconducting and insulating ferromagnets are considered. Exchange and dipole energies are taken into account, as well as retardation effects. At large wave vectors, the spectrum for a superconductor and insulator is the same, though for the former the branch is terminated much earlier than for the latter due to excitation of plasmons. At small wave vectors, the surface wave is more robust in the superconductor since it is separated from the bulk continuum by a finite gap.
引用
@article{arxiv.cond-mat/0503340,
title = {Surface spin waves in superconducting and insulating ferromagnets},
author = {V. Braude and E. B. Sonin},
journal= {arXiv preprint arXiv:cond-mat/0503340},
year = {2009}
}
备注
4 pages, 2 figures