Excitation of magnon spin photocurrents in antiferromagnetic insulators

Abstract

In the circular photogalvanic effect, circularly polarized light can produce a direct electron photocurrent in metals and the direction of the current depends on the polarization. We suggest that an analogous nonlinear effect exists for antiferromagnetic insulators wherein the total spin of light and spin waves is conserved. In consequence, a spin angular momentum is expected to be transfered from photons to magnons so that a circularly polarized electromagnetic field will generate a direct magnon spin current. The direction of the current is determined by the helicity of the light. We show that this resonant effect appears as a second order light-matter interaction. We find also a geometric contribution to the spin photocurrent, which appears for materials with complex lattice structures and Dzyaloshinskii-Moriya interactions.

10 pages, 2 figures, published version

References in corpus (15)

• Strongly coupled magnons and cavity microwave photons
• Spin pumping and spin-transfer torques in antiferromagnets
• Spin Oscillations in Antiferromagnetic NiO Triggered by Circularly Polarized Light
• Impact ionization in InSb probed by THz-pump THz-probe spectroscopy
• Exchange Magnon-Polaritons in Microwave Cavities
• Chirality and angular momentum in optical radiation
• Signature of magnon Nernst effect in an antiferromagnetic insulator
• Magnonic quantum Hall effect and Wiedemann-Franz law
• Thermal Hall effect and topological edge states in a square lattice antiferromagnet
• Nonabelian magnonics in antiferromagnets
• Weyl magnons in pyrochlore antiferromagnets with all-in-all-out orders
• Non-local coupling between antiferromagnets and ferromagnets in cavities
• Spin Hall and Nernst effects of Weyl magnons
• Spin-wave chirality and its manifestations in antiferromagnets
• Interlayer Couplings Mediated by Antiferromagnetic Magnons

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• Interaction-induced nonlinear magnon transport in noncentrosymmetric magnets
• Twisted light-induced spin-spin interaction in a chiral helimagnet
• Laser-Irradiated CrI${}_3$: When Chiral Photons Meet Topological Magnons
• All-Optical Generation of Antiferromagnetic Magnon Currents via the Magnon Circular Photogalvanic Effect
• Ferroelectricity in a magnon Bose-Einstein condensate: Nonreciprocal superfluidity, exceptional points, and Majorana bosons
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