Resonance properties of domain boundaries in quasi-two dimensional antiferromagnets

A.S. Kovaleva, J.E. Prilepsky, E.A. Kryukov, N.V. Kulik

Research output: Contribution to journalArticlepeer-review

Abstract

The so-called "internal modes" localized near the domain boundaries in quasi-two dimensional antiferromagnets are investigated. The possible localized states are classified and their frequency dependences on the system discreteness parameter λ=J/β, which describes the ratio of the magnitudes of the exchange interplane interaction and the magnetic anisotropy, are found. A sudden change in the spectrum of the local internal modes is observed at a critical value of this parameter, λ=λb=3/4, where the domain wall shifts from a collinear to a canted shape. When λ<λb there are one symmetric and two antisymmetric local modes, and when λ>λb the modes are two symmetric, one antisymmetric, and one shear. For discreteness parameters close to the critical value, the frequencies of some of the local modes lie deep inside the gap for the linear AFM magnon spectrum and can be observed experimentally.

Original languageEnglish
Pages (from-to)831-837
Number of pages7
JournalLow Temperature Physics
Volume36
Issue number8
DOIs
Publication statusPublished - 2 Dec 2010

Bibliographical note

© 2010 American Institute of Physics. Resonance properties of domain boundaries in quasi-two dimensional antiferromagnets. Low Temperature Physics 36, 831 (2010); https://doi.org/10.1063/1.3493440

Fingerprint

Dive into the research topics of 'Resonance properties of domain boundaries in quasi-two dimensional antiferromagnets'. Together they form a unique fingerprint.

Cite this