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DOE OSTI · 1821429

Geometrical frustration and competing orders in the dipolar trimerized triangular lattice

Hofhuis, Kevin·Petersen, Charlotte F.·Saccone, Michael Douglas·Dhuey, Scott·Kleibert, Armin·van Dijken, Sebastiaan·Farhan, Alan
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Abstract

Here, we introduce and explore low-energy configurations in two-dimensional arrays consisting of Ising-type dipolar coupled nanomagnets lithographically defined onto three-nanomagnet vertices arranged in a triangular coordination. Thus, the system is dubbed the trimerized triangular lattice. Employing synchrotron-based photoemission electron microscopy, we perform temperature-dependent magnetic imaging of moment configurations. These states are then characterized in terms of spin correlations and magnetic structure factors. The results reveal a competition between ferromagnetic and vortex dominated orders, which can be controlled by varying the relevant lattice parameter and the corresponding competing interactions.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYdipolar interactionferromagnetismfrustrated magnetismmagnetic texturemagnetismspin icesuperparamagnetism

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Hofhuis, Kevin, Petersen, Charlotte F., Saccone, Michael Douglas, Dhuey, Scott, Kleibert, Armin, van Dijken, Sebastiaan, Farhan, Alan. 2021-07-08. Geometrical frustration and competing orders in the dipolar trimerized triangular lattice. https://doi.org/10.1103/physrevb.104.014409

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