Dresden 2020 – scientific programme

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MA: Fachverband Magnetismus

MA 59: Posters Magnetism III

MA 59.21: Poster

Friday, March 20, 2020, 09:00–12:00, P2/EG

Interlayer Dzyaloshinskii-Moriya interaction in low-dimensional magnetic structures — •Maria E. Konstantinova, Levente Rózsa, Elena Y. Vedmedenko, and Roland Wiesendanger — Department of Physics, University of Hamburg, Hamburg, Germany

Interfacial Dzyaloshinskii-Moriya interaction (DMI) is responsible for many interesting chiral phenomena in interfacial magnetic multilayer systems. Particularly, it causes a formation of spin spirals within an interfacial plane. Recent theoretical and experimental studies highlighted the role of the interlayer DMI, in addition to the intralayer DMI, in interfacial systems [1-3]. However, it is still not known how the interlayer DMI influences the magnetic texture appearing due to the intralayer DMI. Here, we study analytically and with Monte Carlo simulations the magnetic structure in multilayers with competing interlayer and intralayer DMI. We find that the interlayer coupling changes the relative phase of rotation of the intralayer spin spirals. If the interfacial DM vector in two subsequent layers is opposite, then the spirals become anharmonic due to the intralayer DMI. Additionally, a chiral rotation across the layers appears. The ground states for different ratios of the interlayer and the intralayer DMI will be discussed.

[1] E. Y. Vedmedenko et al., Phys. Rev. Lett. 122, 257202 (2019).

[2] A. Fernández-Pacheco et al., Nat. Mater. 18, 679 (2019).

[3] D. S. Han et al., Nat. Mater. 18, 703 (2019).