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Journal Article

All-optical generation of antiferromagnetic magnon currents via the magnon circular photogalvanic effect

MPS-Authors
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Viñas Boström,  E.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science (CFEL);

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McIver,  J. W.
Ultrafast Transport in Quantum Materials, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science (CFEL);

/persons/resource/persons22028

Rubio,  A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science (CFEL);
Center for Computational Quantum Physics, The Flatiron Institute;

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Sentef,  M. A.
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science (CFEL);

Fulltext (public)

PhysRevB.104.L100404.pdf
(Publisher version), 870KB

Supplementary Material (public)

supplemental.pdf
(Supplementary material), 2MB

Citation

Viñas Boström, E., Parvini, T. S., McIver, J. W., Rubio, A., Kusminskiy, S. V., & Sentef, M. A. (2021). All-optical generation of antiferromagnetic magnon currents via the magnon circular photogalvanic effect. Physical Review B, 104(10): L100404. doi:10.1103/PhysRevB.104.L100404.


Cite as: http://hdl.handle.net/21.11116/0000-0008-6664-5
Abstract
We introduce the magnon circular photogalvanic effect enabled by two-magnon Raman scattering. This provides an all-optical pathway to the generation of directed magnon currents with circularly polarized light in honeycomb antiferromagnetic insulators. The effect is the leading order contribution to magnon photocurrent generation via optical fields. Control of the magnon current by the polarization and angle of incidence of the laser is demonstrated. Experimental detection by sizable inverse spin Hall voltages in platinum contacts is proposed.