Discrete magnetic breathers in monoaxial chiral helimagnet
Čelâbinskij fiziko-matematičeskij žurnal, Tome 5 (2020) no. 2, pp. 194-201.

Voir la notice de l'article provenant de la source Math-Net.Ru

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.
@article{CHFMJ_2020_5_2_a10,
     author = {I. G. Bostrem and E. G. Ekomasov and J.-i. Kishine and A. S. Ovchinnikov and V. E. Sinitsyn},
     title = {Discrete magnetic breathers in monoaxial chiral helimagnet},
     journal = {\v{C}el\^abinskij fiziko-matemati\v{c}eskij \v{z}urnal},
     pages = {194--201},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CHFMJ_2020_5_2_a10/}
}
TY  - JOUR
AU  - I. G. Bostrem
AU  - E. G. Ekomasov
AU  - J.-i. Kishine
AU  - A. S. Ovchinnikov
AU  - V. E. Sinitsyn
TI  - Discrete magnetic breathers in monoaxial chiral helimagnet
JO  - Čelâbinskij fiziko-matematičeskij žurnal
PY  - 2020
SP  - 194
EP  - 201
VL  - 5
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CHFMJ_2020_5_2_a10/
LA  - en
ID  - CHFMJ_2020_5_2_a10
ER  - 
%0 Journal Article
%A I. G. Bostrem
%A E. G. Ekomasov
%A J.-i. Kishine
%A A. S. Ovchinnikov
%A V. E. Sinitsyn
%T Discrete magnetic breathers in monoaxial chiral helimagnet
%J Čelâbinskij fiziko-matematičeskij žurnal
%D 2020
%P 194-201
%V 5
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CHFMJ_2020_5_2_a10/
%G en
%F CHFMJ_2020_5_2_a10
I. G. Bostrem; E. G. Ekomasov; J.-i. Kishine; A. S. Ovchinnikov; V. E. Sinitsyn. Discrete magnetic breathers in monoaxial chiral helimagnet. Čelâbinskij fiziko-matematičeskij žurnal, Tome 5 (2020) no. 2, pp. 194-201. http://geodesic.mathdoc.fr/item/CHFMJ_2020_5_2_a10/

[1] Ablowitz M.J., Kaup D.J., Newell A.C., Segur H., “Method for solving the sine-Gordon equation”, Physical Review Letters, 30 (1973), 1262–1264 | MR

[2] Infeld E., Rowlands G., “Nonlinear Waves, Solitons and Chaos”, Cambridge, Cambridge University Press, 1990, 199–202 | MR

[3] The Sine-Gordon Model and Its Applications: From Pendula and Josephson Junctions to Gravity and High-energy Physics, eds. J. Cuevas-Maraver, P.G. Kevrekidis, F. Williams, Springer International Publ., 2014, 263 pp. | MR | Zbl

[4] Dolgov A.S., “The localization of vibrations in a nonlinear crystalline structure”, Soviet Physics — Solid State, 28 (1986), 907–909

[5] Sievers A., Takeno S., “Intrinsic localized modes in anharmonic crystals”, Physical Review Letters, 61 (1988), 970–973

[6] Dmitriev S.V., Korznikova E.A., Baimova Yu.A., Velarde M.G., “Discrete breathers in crystals”, Physics Uspekhi, 59 (2016), 446–461

[7] Zakharov P.V., Korznikova E.A., Dmitriev S.V., Ekomasov E.G., Zhou K., “Surface discrete breathers in Pt${}_3$Al intermetallic alloy”, Surface Science, 679 (2019), 1–5

[8] Flach S., “Discrete breathers — advances in theory and applications”, Physics Reports, 467 (2008), 1–116

[9] Wallis R.F., Mills D.L., Boardman A.D., “Intrinsic localized spin modes in ferromagnetic chains with on-site anisotropy”, Physical Review B, 52 (1995), R3828–R3828

[10] Rakhmanova S., Mills D.L., “Nonlinear spin excitations in finite Heisenberg chain”, Physical Review B, 54 (1996), 9225–9231

[11] Lai R., Kiselev S.A., Sievers A.J., “Intrinsic localized spin-wave modes in antiferromagnetic chains with single-ion easy-axis anisotropy”, Physical Review B, 54 (1996), R12665–12668

[12] Kishine J., Ovchinnikov A.S., “Theory of Monoaxial Chiral Helimagnet”, Solid State Physics, 66 (2015), 1–130

[13] Pokrovsky V.L., “Splitting of commensurate-incommensurate phase transition”, Journal of Physics France, 42 (1981), 761–766 | MR