Coexistence of coupled magnetic phases in epitaxial TbMnO3 films revealed by ultrafast optical spectroscopy
J. Qi, L. Yan, H. D. Zhou, J.-X. Zhu, S. A. Trugman, A. J. Taylor, Q., X. Jia, and R. P. Prasankumar
TL;DR
This study uses ultrafast optical spectroscopy to uncover the coexistence of multiple magnetic phases in epitaxial TbMnO3 films, providing insights into their coupled magnetic and ferroelectric properties.
Contribution
It demonstrates the coexistence of coupled antiferromagnetic/ferroelectric and ferromagnetic orders in TbMnO3 films and introduces a theoretical model explaining their coupling mechanisms.
Findings
Identification of coexisting magnetic phases via ultrafast spectroscopy
Development of a theoretical model for magnetic coupling
Guidance for designing new multiferroic materials
Abstract
Ultrafast optical pump-probe spectroscopy is used to reveal the coexistence of coupled antiferromagnetic/ferroelectric and ferromagnetic orders in multiferroic TbMnO3 films through their time domain signatures. Our observations are explained by a theoretical model describing the coupling between reservoirs with different magnetic properties. These results can guide researchers in creating new kinds of multiferroic materials that combine coupled ferromagnetic, antiferromagnetic and ferroelectric properties in one compound.
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