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Chelyabinskiy Fiziko-Matematicheskiy Zhurnal, 2020, Volume 5, Issue 2, Pages 194–201
DOI: https://doi.org/10.24411/2500-0101-2020-15206 (Mi chfmj180) 		 
Physics

Discrete magnetic breathers in monoaxial chiral helimagnet

I. G. Bostrema, E. G. Ekomasovbc, J.-i. Kishined, A. S. Ovchinnikova, V. E. Sinitsyna

a Ural Federal University named after the first President of Russia B.N.Yeltsin, Yekaterinburg, Russia
b Bashkir State University, Ufa, Russia
c South Ural State University (National Research University), Chelyabinsk, Russia
d The Open University of Japan, Chiba, Japan
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DOI: https://doi.org/10.24411/2500-0101-2020-15206
Abstract: Intrinsic localized spin modes, or discrete breathers, are investigated in the forced ferromagnetic state of a monoaxial chiral helimagnet. The approximate solution of these excitations are obtained with the aid of discrete equations of spin dynamics. Conditions on the frequency of the breathers and on the easy-plane anisotropy are established under which the breathers are possible. In the presence of Dzyaloshinskii — Moryia interaction the localized spin modes become spatially modulated and, as a consequence, acquire the chirality. Energy of these excitations, including a pinning potential, is calculated.
Keywords: discrete breather, chiral helimagnet.
Funding agency Grant number
Russian Foundation for Basic Research 20-02-00213
Government of the Russian Federation 02.A03.21.0011
02.A03.21.0006
Foundation for the Development of Theoretical Physics and Mathematics BASIS 17-11-107
The work is supported by the RFBR, grant no. 20-02-00213; by the Government of the Russian Federation, Act 211 of 16.03.2013, contracts no. 02.A03.21.0011 and no. 02.A03.21.0006; by the Foundation for the Advancement of Theoretical Physics and Mathematics "Basis", grant no.17-11-107.
Received: 06.05.2020
Revised: 20.05.2020
Document Type: Article
UDC: 530.182.1
Language: English
Citation: I. G. Bostrem, E. G. Ekomasov, J.-i. Kishine, A. S. Ovchinnikov, V. E. Sinitsyn, “Discrete magnetic breathers in monoaxial chiral helimagnet”, Chelyab. Fiz.-Mat. Zh., 5:2 (2020), 194–201
Citation in format AMSBIB
\Bibitem{BosEkoKis20}
\by I.~G.~Bostrem, E.~G.~Ekomasov, J.-i.~Kishine, A.~S.~Ovchinnikov, V.~E.~Sinitsyn
\paper Discrete magnetic breathers in monoaxial chiral helimagnet
\jour Chelyab. Fiz.-Mat. Zh.
\yr 2020
\vol 5
\issue 2
\pages 194--201
\mathnet{http://mi.mathnet.ru/chfmj180}
\crossref{https://doi.org/10.24411/2500-0101-2020-15206}
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