scholarly journals Curvature induced magnonic crystal in nanowires

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Anastasiia Korniienko ◽  
Volodymyr Kravchuk ◽  
Oleksandr Pylypovskyi ◽  
Denis Sheka ◽  
Jeroen van den Brink ◽  
...  
Keyword(s):  
Band Structure ◽  
Ferromagnetic Nanowires ◽  
New Type ◽  
Magnonic Crystals ◽  
Magnonic Crystal

A new type of magnonic crystals, curvature induced ones, is realized in ferromagnetic nanowires with periodically deformed shape. A magnon band structure of such crystal is fully determined by its curvature: the developed theory is well confirmed by simulations. An application to nanoscale spintronic devises with the geometrically tunable parameters is proposed, namely, to filter elements.

Reprogrammable magnonic crystals formed by interacting ferromagnetic nanowires

2011 ◽  
Vol 83 (11) ◽  
pp. 1989-2001 ◽  
Author(s):  
Jesco Topp ◽  
Georg Duerr ◽  
Klaus Thurner ◽  
Dirk Grundler
Keyword(s):  
Magnetic Field ◽  
Band Structure ◽  
Nanowire Arrays ◽  
Spectroscopy Data ◽  
Micromagnetic Simulations ◽  
One Dimensional ◽  
Periodic Arrays ◽  
Magnonic Crystals ◽  
Magnonic Crystal ◽  
Edge Separation

Spin-wave (SW) modes are addressed which are confined in thin individual Ni80Fe20 nanowires with widths ranging from 220 to 360 nm. In periodic arrays with an edge-to-edge separation of down to 100 nm, confined modes of neighboring nanowires are found to couple coherently and form allowed minibands and forbidden frequency gaps. This gives rise to a one-dimensional magnonic crystal. We present all-electrical SW spectroscopy data and micromagnetic simulations. We find that the nanowire arrays allow us to reprogram the relevant magnonic band structure via the magnetic history. A forbidden frequency gap of up to about 1 GHz is controlled by an in-plane magnetic field being as small as a few mT.

New Type ofd-Band-Metal Alloys: The Valence-Band Structure of the Metallic Glasses Pd-Zr and Cu-Zr

1979 ◽  
Vol 43 (15) ◽  
pp. 1134-1137 ◽  
Author(s):  
P. Oelhafen ◽  
E. Hauser ◽  
H. -J. Güntherodt ◽  
K. H. Bennemann
Keyword(s):  
Band Structure ◽  
Valence Band ◽  
Metallic Glasses ◽  
Metal Alloys ◽  
Valence Band Structure ◽  
New Type

Irreducible first Brillouin zone for two-dimensional magnonic crystals with asymmetric complex lattices

2021 ◽  
pp. 2150170
Author(s):  
Hui Yang ◽  
Guo-Hong Yun ◽  
Yong-Jun Cao
Keyword(s):  
Brillouin Zone ◽  
Unit Cell ◽  
Square Lattice ◽  
Two Dimensional ◽  
Area Formula ◽  
Irreducible Part ◽  
Full Band ◽  
Magnonic Crystals ◽  
Magnonic Crystal ◽  
Complex Basis

Two-dimensional (2D) magnonic crystal (MC) with an asymmetric complex basis is proposed in this paper, and its band structures are calculated in the whole area of the first Brillouin zone (BZ). This kind of MCs is composed of two different atoms in the unit cell, and the symmetry of the unit cell is broken due to changes in the position of the second atom, so the irreducible part of the BZ is no longer the small area [Formula: see text] for square lattice, and it must be expanded to the whole first BZ. Only by investigating the whole first BZ, can we get the true full band-gap for this kind of MCs.

scholarly journals Magnonic band structure of domain wall magnonic crystals

2016 ◽  
pp. 1-1 ◽  
Author(s):  
Daowei Wang ◽  
Yan Zhou ◽  
Zhi-xiong Li ◽  
Yaozhuang Nie ◽  
Xi-guang Wang ◽  
...  
Keyword(s):  
Domain Wall ◽  
Band Structure ◽  
Magnonic Crystals

Band structure of a one-dimensional bilayer magnonic crystal

2019 ◽  
Vol 100 (14) ◽  
Author(s):  
P. Alvarado-Seguel ◽  
R. A. Gallardo
Keyword(s):  
Band Structure ◽  
One Dimensional ◽  
Magnonic Crystal

scholarly journals Латеральный спин-волновой транспорт в системе неидентичных магнонно-кристаллических микроволноводов

2021 ◽  
Vol 63 (9) ◽  
pp. 1330
Author(s):  
В.А. Губанов ◽  
С.Е. Шешукова ◽  
А.В. Садовников
Keyword(s):  
Signal Processing ◽  
Bragg Resonance ◽  
Brillouin Spectroscopy ◽  
Power Dividers ◽  
Frequency Selection ◽  
Waveguide Modes ◽  
Micromagnetic Modeling ◽  
Magnonic Crystals ◽  
Magnonic Crystal ◽  
Selection Of

The control regimes of dipole coupling in the lateral system of non-identical magnonic crystals are investigated by the method of Mandelstam-Brillouin spectroscopy and by the method of micromagnetic modeling. The modes of spatial and frequency selection of the spin-wave signal near the frequency of the band gap zone of the magnonic crystal are revealed. The influence of changes in geometric parameters on the properties of waveguide modes near the frequency of the Bragg resonance is investigated. The results obtained can be used to create microwave signal processing devices, such as demultiplexers, power dividers, couplers.

scholarly journals Field patterns: A new type of wave with infinitely degenerate band structure

2017 ◽  
Vol 120 (5) ◽  
pp. 54003 ◽  
Author(s):  
Ornella Mattei ◽  
Graeme W. Milton
Keyword(s):  
Band Structure ◽  
Field Patterns ◽  
New Type
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