Geometrical Frustration and Planar Triangular Antiferromagnetism in Quasi-Three-Dimensional Artificial Spin Architecture

Alan Farhan*, Michael Saccone, Charlotte Petersen, Scott Dhuey, Kevin Hofhuis, Rhodri Mansell, Rajesh V. Chopdekar, Andreas Scholl, Thomas Lippert, Sebastiaan van Dijken

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

We present a realization of highly frustrated planar triangular antiferromagnetism achieved in a quasi-three-dimensional artificial spin system consisting of monodomain Ising-type nanomagnets lithographically arranged onto a deep-etched silicon substrate. We demonstrate how the three-dimensional spin architecture results in the first direct observation of long-range ordered planar triangular antiferromagnetism, in addition to a highly disordered phase with short-range correlations, once competing interactions are perfectly tuned. Our work demonstrates how escaping two-dimensional restrictions can lead to new types of magnetically frustrated metamaterials.
Original languageEnglish
Article number267203
Number of pages6
JournalPhysical Review Letters
Volume125
Issue number26
DOIs
Publication statusPublished - 30 Dec 2020
MoE publication typeA1 Journal article-refereed

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