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|Magnetic response of a highly nonlinear soliton lattice in a monoaxial chiral helimagnet
Ovchinnikov, A. S.
|American Physical Society
|Kishine J. Magnetic response of a highly nonlinear soliton lattice in a monoaxial chiral helimagnet / J. Kishine, A. S. Ovchinnikov. — DOI 10.1103/PhysRevB.101.184425 // Physical Review B. — 2020. — Vol. 101. — Iss. 18. — 184425.
|We present a theory of nonlinear magnetic response of a chiral soliton lattice state in a monoaxial chiral helimagnet under an oscillating magnetic field. The chiral soliton lattice is stabilized by a static magnetic field applied perpendicular to the chiral axis. Just below the critical field strength, where an incommensurate-to-commensurate phase transition occurs, the soliton density becomes quite low and almost isolated 2π kinks are partitioned by vast ferromagnetic regions. We consider this highly nonlinear regime and demonstrate that internal deformations of each kink give rise to the nonlinear response in this regime. © 2020 American Physical Society.
CRITICAL FIELD STRENGTH
NONLINEAR MAGNETIC RESPONSE
OSCILLATING MAGNETIC FIELDS
STATIC MAGNETIC FIELDS
|The authors would like to express special thanks to Professor Masaki Mito and Professor Hidetoshi Fukuyama for very informative discussions during various stages. The authors also thank Victor Laliena, Javier Campo, and Yusuke Kato for fruitful discussions. This work was supported by JSPS KAKENHI Grant Number 17H02923. A.S.O. acknowledges funding by the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS Grant No. 17-11-107, and by Act 211 Government of the Russian Federation, Contract No. 02.A03.21.0006. A.S.O. thanks also the Ministry of Education and Science of the Russian Federation, Project No. FEUZ-2020-0054.
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