Dipolar Cairo lattice: Geometrical frustration and short-range correlations

Michael Saccone, Kevin Hofhuis, Yen-Lin Huang, Scott Dhuey, Zuhuang Chen, Andreas Scholl, Rajesh V. Chopdekar, Sebastiaan Van Dijken, Alan Farhan

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17 引文 斯高帕斯(Scopus)

摘要

We have studied low-energy configurations in two-dimensional arrays consisting of Ising-type dipolar coupled nanomagnets lithographically defined onto a two-dimensional Cairo lattice, thus dubbed the dipolar Cairo lattice. Employing synchrotron-based photoemission electron microscopy (PEEM), we perform real-space imaging of moment configurations achieved after thermal annealing. These states are then characterized in terms of vertex populations, spin- and emergent magnetic charge correlations, and a topology-enforced emergent ice rule. The results reveal a strong dominance of short-range correlations and the absence of long-range order, reflecting the high degree of geometrical spin frustration present in this example of an artificial frustrated spin system.

原文English
文章編號104402
頁(從 - 到)1-8
頁數8
期刊Physical Review Materials
3
發行號10
DOIs
出版狀態Published - 7 10月 2019

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