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arXiv · 0812.4468

Tuning magnetic frustration of nanomagnets in triangular-lattice geometry

Xianglin Ke·Jie Li·Sheng Zhang·Cristiano Nisoli·Vincent H. Crespi·Peter Schiffer
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Abstract

We study the configuration of magnetic moments on triangular lattices of single-domain ferromagnetic islands, examining the consequences of magnetostatic interactions in this frustrated geometry. By varying the island-island distance along one direction, we are able to tune the ratio of different interactions between neighboring islands, resulting in a corresponding variation in the local correlations between the island moments. Unlike other artificial frustrated magnets, this lattice geometry displays regions of ordered moment orientation, possibly resulting from a higher degree of anisotropy leading to a reduced level of frustration.

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Xianglin Ke, Jie Li, Sheng Zhang, Cristiano Nisoli, Vincent H. Crespi, Peter Schiffer. 2008-12-24. Tuning magnetic frustration of nanomagnets in triangular-lattice geometry. https://doi.org/10.1063/1.3043687

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