Dynamics of reconfigurable artificial spin ice: Toward magnonic functional materials

Gliga, Sebastian, Iacocca, Ezio and Heinonen, Olle G. (2020) Dynamics of reconfigurable artificial spin ice: Toward magnonic functional materials. APL Materials, 8 (4). 040911. ISSN 2166-532X

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Official URL: https://doi.org/10.1063/1.5142705

Abstract

Over the past few years, the study of magnetization dynamics in artificial spin ices has become a vibrant field of study. Artificial spin ices are ensembles of geometrically arranged, interacting magnetic nanoislands, which display frustration by design. These were initially created to mimic the behavior in rare earth pyrochlore materials and to study emergent behavior and frustration using two-dimensional magnetic measurement techniques. Recently, it has become clear that it is possible to create artificial spin ices, which can potentially be used as functional materials. In this perspective, we review the resonant behavior of spin ices in the GHz frequency range, focusing on their potential application as magnonic crystals. In magnonic crystals, spin waves are functionalized for logic applications by means of band structure engineering. While it has been established that artificial spin ices can possess rich mode spectra, the applicability of spin ices to create magnonic crystals hinges upon their reconfigurability. Consequently, we describe recent work aiming to develop techniques and create geometries allowing full reconfigurability of the spin ice magnetic state. We also discuss experimental, theoretical, and numerical methods for determining the spectral response of artificial spin ices and give an outlook on new directions for reconfigurable spin ices.

Item Type: Article
Subjects: F200 Materials Science
F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 22 Jun 2020 14:26
Last Modified: 22 Jun 2020 14:30
URI: http://nrl.northumbria.ac.uk/id/eprint/43533

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