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Magnetic order in 2D antiferromagnets revealed by spontaneous anisotropic magnetostriction

Journal Article (2023)
Author(s)

Maurits J.A. Houmes (TU Delft - Applied Sciences, Kavli institute of nanoscience Delft)

Gabriele Baglioni (TU Delft - Applied Sciences, Kavli institute of nanoscience Delft)

Makars Šiškins (TU Delft - Mechanical Engineering, Kavli institute of nanoscience Delft)

Martin Lee (TU Delft - Applied Sciences, Kavli institute of nanoscience Delft)

Dorye L. Esteras (Universidad de Valencia (ICMol))

Samuel Mañas-Valero (TU Delft - Applied Sciences, Universidad de Valencia (ICMol), Kavli institute of nanoscience Delft)

Yaroslav M. Blanter (Kavli institute of nanoscience Delft, TU Delft - Applied Sciences)

Peter G. Steeneken (Kavli institute of nanoscience Delft, TU Delft - Mechanical Engineering)

Herre S.J. van der Zant (Kavli institute of nanoscience Delft, TU Delft - Applied Sciences)

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Research Group
QN/van der Zant Lab
DOI related publication
https://doi.org/10.1038/s41467-023-44180-4 Final published version
More Info
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Publication Year
2023
Language
English
Research Group
QN/van der Zant Lab
Issue number
1
Volume number
14
Article number
8503
Downloads counter
472
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Abstract

The temperature dependent order parameter provides important information on the nature of magnetism. Using traditional methods to study this parameter in two-dimensional (2D) magnets remains difficult, however, particularly for insulating antiferromagnetic (AF) compounds. Here, we show that its temperature dependence in AF MPS3 (M(II) = Fe, Co, Ni) can be probed via the anisotropy in the resonance frequency of rectangular membranes, mediated by a combination of anisotropic magnetostriction and spontaneous staggered magnetization. Density functional calculations followed by a derived orbital-resolved magnetic exchange analysis confirm and unravel the microscopic origin of this magnetization-induced anisotropic strain. We further show that the temperature and thickness dependent order parameter allows to deduce the material’s critical exponents characterising magnetic order. Nanomechanical sensing of magnetic order thus provides a future platform to investigate 2D magnetism down to the single-layer limit.