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DOE OSTI · 2481966

Light-induced magnetization from magnonic rectification

Kahana, Tom·Bustamante Lopez, Daniel A.·Juraschek, Dominik M.
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Abstract

Rectification describes the conversion of an oscillating field or current into a quasi-static one and the most basic example of a rectifier is an AC/DC converter in electronics. This principle can be translated to nonlinear light-matter interactions, where optical rectification converts the oscillating electric field component of light into a quasi-static polarization and phononic rectification converts a lattice vibration into a quasi-static structural distortion. Here, we present a rectification mechanism for magnetism that we call magnonic rectification, where a spin precession is converted into a quasi-static magnetization through the force exerted by a coupled chiral phonon mode. The transiently induced magnetic state resembles that of a canted antiferromagnet, opening an avenue toward creating dynamical spin configurations that are not accessible in equilibrium.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

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Kahana, Tom, Bustamante Lopez, Daniel A., Juraschek, Dominik M.. 2024-09-25. Light-induced magnetization from magnonic rectification. https://doi.org/10.1126/sciadv.ado0722

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