Large magnonic band gaps and defect modes in one-dimensional comblike structures

Al-Wahsh, Housni; Akjouj, Abdellatif; Djafari-Rouhani, Bahram; Vasseur, Jérôme; Dobrzynski, Leonard; Deymier, Pierre

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1103/PhysRevB.59.8709

Titre :

Large magnonic band gaps and defect modes in one-dimensional comblike structures

Auteur(s) :

Al-Wahsh, Housni [Auteur]
Benha University [BU]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Akjouj, Abdellatif [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Djafari-Rouhani, Bahram [Auteur]

Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) [FEMTO-ST]
Vasseur, Jérôme [Auteur]

Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Dobrzynski, Leonard [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Deymier, Pierre [Auteur]

Titre de la revue :

Physical Review B

Pagination :

8709-8719

Éditeur :

American Physical Society

Date de publication :

1999-04

ISSN :

2469-9950

Discipline(s) HAL :

Sciences de l'ingénieur [physics]
Physique [physics]

Résumé en anglais : [en]

We report the existence of large gaps in the band structure of a comblike structure composed of a one-dimensional magnonic waveguide along which N′ dangling side branches are grafted at N equidistant sites. These gaps ...
Lire la suite >We report the existence of large gaps in the band structure of a comblike structure composed of a one-dimensional magnonic waveguide along which N′ dangling side branches are grafted at N equidistant sites. These gaps originate not only from the periodicity of the system but also from the resonance states of the grafted branches (which play the role of resonators). The width of these gaps is sensitive to the length of the side branches as well as to the numbers N and N′. The presence of defect branches in the comblike structure can give rise to localized states inside the gaps. We show that these states are very sensitive to the length of the side branches, to the periodicity, to N or/and N′ and to the length of the defect branches. Analytic expressions are given for the band structure of combs for large N and for the transmission coefficient for an arbitrary value of N and N′ with and without defects.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL

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