6533b856fe1ef96bd12b2912
RESEARCH PRODUCT
Magnetic order in 2D antiferromagnets revealed by spontaneous anisotropic magnetostriction
Maurits J. A. HoumesGabriele BaglioniMakars ŠIškinsMartin LeeDorye L. EsterasAlberto M. RuizSamuel Mañas-valeroCarla Boix-constantJose J. BaldovíEugenio CoronadoYaroslav M. BlanterPeter G. SteenekenHerre S. J. Van Der Zantsubject
Condensed Matter - Materials ScienceCondensed Matter - Mesoscale and Nanoscale PhysicsStatistical Mechanics (cond-mat.stat-mech)Mesoscale and Nanoscale Physics (cond-mat.mes-hall)Materials Science (cond-mat.mtrl-sci)FOS: Physical sciencesCondensed Matter - Statistical Mechanicsdescription
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 MPS$_{3}$ (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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2023-03-20 |