We report experimental and theoretical studies on the magnetoelastic interactions in MnPS3. Raman scattering response measured as a function of temperature shows a blue shift of the Raman active modes at 120.2 and 155.1 cm−1, when the temperature is raised across the antiferromagnetic-paramagnetic transition. Density functional theory (DFT) calculations have been performed to estimate the effective exchange interactions and calculate the Raman active phonon modes. The calculations lead to the conclusion that the peculiar behavior with temperature of the two low energy phonon modes can be explained by the symmetry of their corresponding normal coordinates which involve the virtual modification of the super-exchange angles associated with the leading antiferromagnetic (AFM) interactions.
@article{arxiv.2005.11119,
title = {Magnetoelastic interaction in the two-dimensional magnetic material MnPS$_3$ studied by first principles calculations and Raman experiments},
author = {Diana Vaclavkova and Alex Delhomme and Clément Faugeras and Marek Potemski and Aleksander Bogucki and Jan Suffczyński and Piotr Kossacki and Andrew Wildes and Benoit Gremaud and Andrés Saúl},
journal= {arXiv preprint arXiv:2005.11119},
year = {2020}
}