Magnetic order in 2D antiferromagnets disclosed by spontaneous anisotropic magnetostriction

Conference paper (2023)

Authors

M.J.A. Houmes Kavli institute of nanoscience Delft, QN/van der Zant Lab -

G. Baglioni QN/van der Zant Lab - , Kavli institute of nanoscience Delft

Gabriele Baglioni QN/van der Zant Lab - , Kavli institute of nanoscience Delft

M. Siskins Kavli institute of nanoscience Delft, Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering

M. Lee QN/Steeneken Lab - , Kavli institute of nanoscience Delft

Dorye L. Esteras Universidad de Valencia (ICMol)

S. Mañas Valero Universidad de Valencia (ICMol)

Y.M. Blanter QN/Blanter Group - , Kavli institute of nanoscience Delft

Peter G. Steeneken Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering , Kavli institute of nanoscience Delft, Precision and Microsystems Engineering , QN/Steeneken Lab -

P.G. Steeneken Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering , Kavli institute of nanoscience Delft, Precision and Microsystems Engineering , QN/Steeneken Lab -

H.S.J. van der Zant QN/van der Zant Lab - , Kavli institute of nanoscience Delft

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Research Group

QN/van der Zant Lab () (TU Delft)

DOI: https://doi.org/10.1109/NMDC57951.2023.10343628

Nanomechanics Phase transition Two-dimensional materials Antiferromagnetic Membrane resonator Transition-metal phosphorus trisulphides

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Published Date

2023

Language

English

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Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/van der Zant Lab

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. 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 inducing anistropic 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.

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