Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101925
Title: Excitation of magnon spin photocurrents in antiferromagnetic insulators
Authors: Proskurin, I.
Ovchinnikov, A. S.
Kishine, J. -I.
Stamps, R. L.
Issue Date: 2018
Publisher: American Physical Society
Citation: Excitation of magnon spin photocurrents in antiferromagnetic insulators / I. Proskurin, A. S. Ovchinnikov, J. -I. Kishine, et al. — DOI 10.1103/PhysRevB.98.134422 // Physical Review B. — 2018. — Vol. 98. — Iss. 13. — 134422.
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 transferred 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. © 2018 American Physical Society.
Keywords: ANTIFERROMAGNETISM
CIRCULAR POLARIZATION
ELECTROMAGNETIC FIELDS
PHOTOCURRENTS
ANTIFERROMAGNETIC INSULATORS
CIRCULARLY POLARIZED
CIRCULARLY POLARIZED LIGHT
DZYALOSHINSKII-MORIYA INTERACTION
ELECTRON PHOTOCURRENTS
LIGHT-MATTER INTERACTIONS
PHOTOGALVANIC EFFECTS
SPIN ANGULAR MOMENTUM
LIGHT
URI: http://hdl.handle.net/10995/101925
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85055098523
PURE ID: 8158263
ISSN: 24699950
DOI: 10.1103/PhysRevB.98.134422
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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