Nanoscale control of competing interactions and geometrical frustration in a dipolar trident lattice

Alan Farhan (), Charlotte F. Petersen, Scott Dhuey, Luca Anghinolfi, Qi Hang Qin, Michael Saccone, Sven Velten, Clemens Wuth, Sebastian Gliga, Paula Mellado, Mikko J. Alava, Andreas Scholl and Sebastiaan van Dijken
Additional contact information
Alan Farhan: Advanced Light Source, Lawrence Berkeley National Laboratory (LBNL)
Charlotte F. Petersen: Aalto University
Scott Dhuey: Molecular Foundry, Lawrence Berkeley National Laboratory (LBNL)
Luca Anghinolfi: Università di Genova
Qi Hang Qin: Aalto University School of Science
Michael Saccone: University of California
Sven Velten: Materials Sciences Division, Lawrence Berkeley National Laboratory
Clemens Wuth: Center for X-ray Optics, Lawrence Berkeley National Laboratory
Sebastian Gliga: University of Glasgow
Paula Mellado: Adolfo Ibáñez University, Diagonal Las Torres
Mikko J. Alava: Aalto University
Andreas Scholl: Advanced Light Source, Lawrence Berkeley National Laboratory (LBNL)
Sebastiaan van Dijken: Aalto University School of Science

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Geometrical frustration occurs when entities in a system, subject to given lattice constraints, are hindered to simultaneously minimize their local interactions. In magnetism, systems incorporating geometrical frustration are fascinating, as their behavior is not only hard to predict, but also leads to the emergence of exotic states of matter. Here, we provide a first look into an artificial frustrated system, the dipolar trident lattice, where the balance of competing interactions between nearest-neighbor magnetic moments can be directly controlled, thus allowing versatile tuning of geometrical frustration and manipulation of ground state configurations. Our findings not only provide the basis for future studies on the low-temperature physics of the dipolar trident lattice, but also demonstrate how this frustration-by-design concept can deliver magnetically frustrated metamaterials.

Date: 2017
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DOI: 10.1038/s41467-017-01238-4

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