Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102065
Title: Spin-Wave Chirality and Its Manifestations in Antiferromagnets
Authors: Proskurin, I.
Stamps, R. L.
Ovchinnikov, A. S.
Kishine, J. -I.
Issue Date: 2017
Publisher: American Physical Society
Citation: Spin-Wave Chirality and Its Manifestations in Antiferromagnets / I. Proskurin, R. L. Stamps, A. S. Ovchinnikov, et al. — DOI 10.1103/PhysRevLett.119.177202 // Physical Review Letters. — 2017. — Vol. 119. — Iss. 17. — 177202.
Abstract: As first demonstrated by Tang and Cohen in chiral optics, the asymmetry in the rate of electromagnetic energy absorption between left and right enantiomers is determined by an optical chirality density. Here, we demonstrate that this effect can exist in magnetic spin systems. By constructing a formal analogy with electrodynamics, we show that in antiferromagnets with broken chiral symmetry, the asymmetry in local spin-wave energy absorption is proportional to a spin-wave chirality density, which is a direct counterpart of optical zilch. We propose that injection of a pure spin current into an antiferromagnet may serve as a chiral symmetry breaking mechanism, since its effect in the spin-wave approximation can be expressed in terms of additional Lifshitz invariants. We use linear response theory to show that the spin current induces a nonequilibrium spin-wave chirality density. © 2017 American Physical Society.
Keywords: ANTIFERROMAGNETIC MATERIALS
CHIRALITY
ELECTROMAGNETIC WAVES
ENERGY ABSORPTION
WAVE ENERGY CONVERSION
ANTIFERROMAGNETS
CHIRAL OPTICS
CHIRAL SYMMETRY
LINEAR-RESPONSE THEORY
MAGNETIC SPIN
NON EQUILIBRIUM
OPTICAL CHIRALITY
SPIN WAVE APPROXIMATION
SPIN WAVES
ARTICLE
CHIRALITY
ENERGY ABSORPTION
URI: http://hdl.handle.net/10995/102065
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85032458788
PURE ID: 2211214
33daa48e-61d0-481d-9539-8a1f8206b5b2
ISSN: 319007
DOI: 10.1103/PhysRevLett.119.177202
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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