Title :

Chapter 1 - Centered system magnons

Author(s) :

Dobrzynski, Leonard [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Akjouj, Abdellatif [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Leveque, Gaetan [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
El Boudouti, El Houssaine [Auteur]
Université Mohammed Premier [Oujda] = Université Mohammed Ier
Al-Wahsh, Housni [Auteur]
Benha University [BU]

Book title :

Magnonics: interface transmission tutorial book series

Publisher :

Elsevier

Publication date :

2019

ISBN :

ISBN 978-0-12-813366-8 ; e-ISBN 978-0-12-813367-5

English keyword(s) :

Surface
Magnons
Phonons
Centered systems
Trapping
Isolation
Phase shift
Bound in continuum states
Subsystem states

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

This chapter presents two simple models of magnons in centered systems. The first model represents N, with N ≥ 2, electron spins pointing in the same space direction and situated at different space positions. The first of ...
Show more >This chapter presents two simple models of magnons in centered systems. The first model represents N, with N ≥ 2, electron spins pointing in the same space direction and situated at different space positions. The first of these spins is in the center of a circle. The others are on this circle and are the surface of this system. This model uses the Heisenberg interaction Hamiltonian. The second model uses the long-wavelength approximation of this Hamiltonian. These models present degenerate resonant subsystem states, localized each on two of the N-1 system constituents. They show also trapping, isolation effects, degenerate surface mode behaviors, and so on. A transposition of magnons to phonons is presented then, as an example of how these excitation models are similar. Such transpositions are one of the aim of this interface transmission book series. Some general perspectives are finally given: bound in continuum states, model tuning, breaking symmetry effects, possible transpositions to other waves: plasmons, electrons, photons, polaritons, and so on.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Collections :

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

Source :

Harvested from HAL