Theory of bulk and surface magnons in Heisenberg ferromagnetic superlattices

Dobrzynski, Leonard; Djafari-Rouhani, B.; Puszkarski, H.

Type de document :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1103/PhysRevB.33.3251

Titre :

Theory of bulk and surface magnons in Heisenberg ferromagnetic superlattices

Auteur(s) :

Dobrzynski, Leonard [Auteur]

Physique - IEMN [PHYSIQUE - IEMN]
Djafari-Rouhani, B. [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Puszkarski, H. [Auteur]
Uniwersytet im. Adama Mickiewicza w Poznaniu = Adam Mickiewicz University in Poznań [UAM]

Titre de la revue :

Physical Review B

Pagination :

3251-3256

Éditeur :

American Physical Society

Date de publication :

1986-03

ISSN :

2469-9950

Discipline(s) HAL :

Physique [physics]/Matière Condensée [cond-mat]

Résumé en anglais : [en]

We present a theoretical study of the bulk and surface magnons of a semi-infinite stack of two different ferromagnetic films. Each film is modeled by a simple-cubic lattice of spins coupled via nearest-neighbor exchange ...
Lire la suite >We present a theoretical study of the bulk and surface magnons of a semi-infinite stack of two different ferromagnetic films. Each film is modeled by a simple-cubic lattice of spins coupled via nearest-neighbor exchange (Heisenberg ferromagnet). The superlattice has a larger periodicity in the direction perpendicular to the slabs and therefore many magnon branches in the folded Brillouin zone. In the gaps exisiting between these magnon branches appear the surface-localized magnons. The simplicity of our model allows one to obtain in closed form the bulk and (001) surface Green's functions for this magnetic superlattice. The analytic knowledge of these functions enables us to study easily all the bulk and and surface magnetic properties of a ferromagnetic superlattice. We give here the analytic expression we obtained for the folded bulk magnons and also the expression that gives the surface-localized modes, which may appear within the extra gaps which exist between the folded bulk bands. One figure for a specific case illustrates these results.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

Fichiers

document
Accès libre
Accéder au document

1986%2C%20Dobrzynski%2C%20Djafari%20et%20Puszkarski.pdf
Accès libre
Accéder au document

Theory of bulk and surface magnons in ... BibTeX CSV Excel RIS

Fichiers

Theory of bulk and surface magnons in ...

BibTeX

CSV

Excel

RIS