najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2020-11-6-659-665najo-364Research ArticlePHYSICSФИЗИКАEffective easy-axis anisotropy of the two-sublattice single-chain magnet with twisted easy planesShustinM. S.

660036, Krasnoyarsk

mshustin@yandex.ruPotkinaM. N.

49, St. Petersburg, 197101

St. Petersburg, 198504

Univ. of Iceland 107 Reykjav´ık, Iceland

potkina.maria@yandex.ruL.V. Kirensky Institute of PhysicsRussian FederationITMO University, Kronverkskiy; St. Petersburg State University; Science Institute and Faculty of Physical SciencesRussian Federation202029072025116659–665Copyright © Shustin M.S., Potkina M.N., 20252025Shustin M.S., Potkina M.N.Shustin M.S., Potkina M.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/364

An analytical solution for the spin-wave spectrum of the two-sublattice 1D magnet with SA=SB =1 and twisting easy planes has been obtained. Such planes are mutually twisted by an angle ϕ relative to each other. For the case of mutually orthogonal easy planes ϕ = π/2, the spectrum vs. quasi-momentum dependence has been compared with that of an easy-axis magnet with the easy axis aligned along the line of intersection of the planes. An analogy of the spectra of the models has been shown, indicating the possibility of the effective easy axis anisotropy in easy-plane two-sublattice single-chain magnets.

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The authors declare that there are no conflicts of interest present.