SCATTERING AND LOCALIZATION OF SPIN WAVES IN QUASI-2D HEISENBERG FERROMAGNETS WITH EXTENDED FLAT INTERFACE BOUNDARIES

M. Belhadi () and R. Chadli
Additional contact information
M. Belhadi: Département de Physique, Faculté des Sciences, Université Mouloud Mammeri, BP 17, 15000 Tizi-Ouzou, Algeria
R. Chadli: Département de Physique, Faculté des Sciences, Université Mouloud Mammeri, BP 17, 15000 Tizi-Ouzou, Algeria

Surface Review and Letters (SRL), 2004, vol. 11, issue 03, 321-329

Abstract: The influence of extended flat interface boundaries on the scattering and localization of spin waves in disordered quasi-two-dimensional Heisenberg ferromagnets is studied. The two ferromagnets are considered as two dissimilar semi-infinite slabs in contact, joined together at an extended flat interface between two adjacent planes. The mathematical framework of the matching method is used to analyze both the localization and the scattering phenomena on the extended flat interface boundaries in the harmonic approximation with nearest neighbor magnetic exchange interactions. The energy of spin-wave-localized modes arising from the absence of magnetic translation symmetry in the direction normal to the interface boundaries is determined. The transmission and reflection probabilities, as well as the average transmittance of magnetic excitations across the interface, are calculated in full accordance with the Landauer–Büttiker description of electron transport, and numerical results are presented for the most representative sets of system parameters in a large range of scattering energies. Results show that there are several localized modes, which may be either optical or acoustical modes (depending on the system parameters), and the scattering properties of the system are a strong function of scattering energy and model parameters, which are assumed to be different at the interface compared with those of the bulk.

Keywords: Low-dimensional structures; Heisenberg ferromagnets; localized spin waves; theory of scattering; interface dynamics (search for similar items in EconPapers)
Date: 2004
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X04006244
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:11:y:2004:i:03:n:s0218625x04006244

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X04006244

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().