Document Type

Article

Language

eng

Publication Date

1-9-2018

Publisher

American Institute of Physics

Source Publication

AIP Advances

Source ISSN

2158-3226

Abstract

Artificial spin ice is made from a large array of patterned magnetic nanoislands designed to mimic naturally occurring spin ice materials. The geometrical arrangement of the kagomé lattice guarantees a frustrated arrangement of the islands’ magnetic moments at each vertex where the three magnetic nanoislands meet. This frustration leads to a highly degenerate ground state which gives rise to a finite (residual) entropy at zero temperature. In this work we use the Monte Carlo simulation to explore the effects of disorder in kagomé spin ice. Disorder is introduced to the system by randomly removing a known percentage of magnetic islands from the lattice. The behavior of the spin ice changes as the disorder increases; evident by changes to the shape and locations of the peaks in heat capacity and the residual entropy. The results are consistent with observations made in diluted physical spin ice materials.

Comments

Published version. AIP Advances, Vol. 8, No. 5 (January 9, 2018): 055711. DOI. © Author(2018 s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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