Brillouin light scattering study of magnetic-element normal modes in a square artificial spin ice geometry

被引：29

作者：

Li, Y. ^{[1
]}

Gubbiotti, G. ^{[2
]}

Casoli, F. ^{[3
]}

Goncalves, F. J. T. ^{[1
]}

Morley, S. A. ^{[4
]}

Rosamond, M. C. ^{[5
]}

Linfield, E. H. ^{[5
]}

Marrows, C. H. ^{[4
]}

McVitie, S. ^{[1
]}

Stamps, R. L. ^{[1
]}

机构：

[1] Univ Glasgow, SUPA Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[2] CNR, IOM, Sede Perugia, Dipartimento Fis & Geol, Via A Pascoli, I-06123 Perugia, Italy

[3] CNR, IMEM, I-43124 Parma, Italy

[4] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[5] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2017年 / 50卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

hysteresis loop; spin wave; magnetic normal mode; artificial spin ice;

D O I：

10.1088/1361-6463/50/1/015003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the results, from experimental and micromagnetic studies, of the magnetic normal modes in artificial square spin ice systems consisting of ferromagnetic-monodomain islands. Spin-wave properties are measured by Brillouin light scattering. The mode spectra contain several branches whose frequencies are sensitive to the magnitude and in-plane orientation of an applied magnetic field. We also identify soft modes that exhibit different behaviours depending on the direction of the applied magnetic field. The obtained results are well described with micromagnetic simulations of independent magnetic elements arranged along two sublattices.

引用

页数：8

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