Fragmentation of magnetism in artificial kagome dipolar spin ice

Benjamin Canals (), Ioan-Augustin Chioar, Nguyen Van-Dai, Michel Hehn, Daniel Lacour, François Montaigne, Andrea Locatelli, Tevfik Onur Menteş, Benito Santos Burgos and Nicolas Rougemaille
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Benjamin Canals: CNRS, Inst NEEL
Ioan-Augustin Chioar: CNRS, Inst NEEL
Nguyen Van-Dai: CNRS, Inst NEEL
Michel Hehn: Institut Jean Lamour, Université de Lorraine and CNRS
Daniel Lacour: Institut Jean Lamour, Université de Lorraine and CNRS
François Montaigne: Institut Jean Lamour, Université de Lorraine and CNRS
Andrea Locatelli: Elettra-Sincrotrone Trieste S.C.p.A., SS 14, km 163.5, AREA Science Park, Basovizza, 34149 Trieste, Italy
Tevfik Onur Menteş: Elettra-Sincrotrone Trieste S.C.p.A., SS 14, km 163.5, AREA Science Park, Basovizza, 34149 Trieste, Italy
Benito Santos Burgos: Elettra-Sincrotrone Trieste S.C.p.A., SS 14, km 163.5, AREA Science Park, Basovizza, 34149 Trieste, Italy
Nicolas Rougemaille: CNRS, Inst NEEL

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: Abstract Geometrical frustration in magnetic materials often gives rise to exotic, low-temperature states of matter, such as the ones observed in spin ices. Here we report the imaging of the magnetic states of a thermally active artificial magnetic ice that reveal the fingerprints of a spin fragmentation process. This fragmentation corresponds to a splitting of the magnetic degree of freedom into two channels and is evidenced in both real and reciprocal space. Furthermore, the internal organization of both channels is interpreted within the framework of a hybrid spin–charge model that directly emerges from the parent spin model of the kagome dipolar spin ice. Our experimental and theoretical results provide insights into the physics of frustrated magnets and deepen our understanding of emergent fields through the use of tailor-made magnetism.

Date: 2016
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DOI: 10.1038/ncomms11446

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