Resonant collective dynamics of the weakly pinned soliton lattice in a monoaxial chiral helimagnet / Kishine Jun-ichiro,Proskurin I.,Bostrem I. G.,Ovchinnikov A. S.,Sinitsyn Vl. E. // PHYSICAL REVIEW B. - 2016. - V. 93, l. 5.

ISSN/EISSN:

2469-9950 / 2469-9969

Type:

Article

Abstract:

We study the spin dynamics of a confined chiral soliton lattice whose ends are weakly held. We demonstrate that in this case the system possesses its own resonant frequency. To study features of the resonant dynamics, we analyze the collective motion of the system driven by an oscillating magnetic field directed along the chiral axis. By using the method of collective coordinates we find analytically the resonant frequency and verify the result by numerical simulation of the spin dynamics with the aid of Landau-Lifshitz-Gilbert equations. The numerical simulation shows an appearance of the asymmetric profile of the frequency response function with increasing ac field, which is typical for a nonlinear resonance. To give an explanation of this behavior, we invoke the multiple-time-scale method and predict an emergence of hysteresis phenomena. We also demonstrate that the spin-motive force is strongly amplified by the resonant oscillations.

Author keywords:

SKYRMIONS

DOI:

10.1103/PhysRevB.93.054403

Web of Science ID:

ISI:000369390600003

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB 2
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	054403
EISSN	2469-9969
Keywords-Plus	SKYRMIONS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Kishine, Jun-ichiro/C-1743-2015 Sinitsyn, Vladimir/E-8359-2017 Ovchinnikov, Alexander/B-9906-2009
ORCID-Numbers	Kishine, Jun-ichiro/0000-0001-6162-7067 Sinitsyn, Vladimir/0000-0001-9743-7118 Ovchinnikov, Alexander/0000-0002-1173-9260 Proskurin, Igor/0000-0002-0314-2237
Funding-Acknowledgement	Act 211 Government of the Russian Federation {[}02.A03.21.0006]; RFBR {[}14-02-92104]; JSPS KAKENHI {[}25287087, 25220803]; Center for Chiral Science, Hiroshima University
Funding-Text	We are especially grateful to Y. Togawa and M. Mito for fruitful discussions. We also acknowledge Y. Masaki for useful comments. This work was supported by Act 211 Government of the Russian Federation No. 02.A03.21.0006. A.S.O. and I.G.B. acknowledge RFBR Grant No. 14-02-92104. This work was also supported by JSPS KAKENHI Grants No. 25287087 and No. 25220803. We are also supported by Center for Chiral Science, Hiroshima University.
Number-of-Cited-References	38
Usage-Count-Since-2013	9
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	DC7HN