Spin-Wave Chirality and Its Manifestations in Antiferromagnets / Proskurin Igor,Stamps Robert L.,Ovchinnikov Alexander S.,Kishine Jun-ichiro // PHYSICAL REVIEW LETTERS. - 2017. - V. 119, l. 17.

ISSN/EISSN:

0031-9007 / 1079-7114

Type:

Article

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.

Author keywords:

FREE ELECTROMAGNETIC-FIELD

DOI:

10.1103/PhysRevLett.119.177202

Web of Science ID:

ISI:000413663300011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	OCT 25
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	177202
EISSN	1079-7114
Keywords-Plus	FREE ELECTROMAGNETIC-FIELD
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	iprosk@ouj.ac.jp
Funding-Acknowledgement	Government of the Russian Federation {[}02.A03.21.0006]; Ministry of Education and Science of the Russian Federation {[}MK-6230.2016.2]; Japan Society for the Promotion of Science (JSPS) KAKENHI {[}25287087, 17H02929, 17H02767, 25220803]; JSPS; Engineering and Physical Sciences Research Council (EPSRC) {[}EP/M024423]; Russian Foundation for Basic Research (RFBR) {[}17-52-371 500131]; Foundation for the Advancement of Theoretical Physics ``BASIS{''} {[}17-11-107]
Funding-Text	This work was supported by the Government of the Russian Federation Program No. 02.A03.21.0006, by the Ministry of Education and Science of the Russian Federation, Grant No. MK-6230.2016.2, by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grants No. 25287087, No. 17H02929, No. 17H02767, and No. 25220803, and JSPS Core-to-Core Program A, Advanced Research Networks, by the Engineering and Physical Sciences Research Council (EPSRC) Grant No. EP/M024423, by the Russian Foundation for Basic Research (RFBR), Grant No. 17-52-371 500131, and by the Foundation for the Advancement of Theoretical Physics ``BASIS{''} Grant No. 17-11-107.
Number-of-Cited-References	61
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	3
Journal-ISO	Phys. Rev. Lett.
Doc-Delivery-Number	FK7CZ