21. 12. 2023 13:00

Pavel Baláž, Ph.D. » In-plane Magnetic Skyrmion Valve Made of 90° Pinned Magnetic Domain Walls

Institute of Physics of the Czech Academy of Sciences

Location: Seminar room KFKL, MFF UK (room F052 - ground floor near the rear staircase, Ke Karlovu 5)

Magnetic skyrmions are small spherical whirls in the vector field of magnetization known for their hight stability. Typically, they can be found in thin films or magnetic multilayers featuring Dzyaloshinskii-Moriya interaction in combination with perpendicular magnetic anisotropy. Recently, number of theoretical studies and numerical simulations have shown a possibility of existence of in-plane skyrmions in magnetic thin layers with in-plane easy-axis magnetic anisotropy and interfacial DMI [1]. These topological defects known as in-plane skyrmions, or sometimes as asymmetric skyrmions [2], or bimerons substantially differ from their out-of-plane twins. Unlike skyrmions in systems with perpendicular magnetic anisotropy, the in-plane skyrmions of both topological charges (Q=±1) can simultaneously exist in the same magnetic domain. Importantly, in-plane magnetic skyrmions can interact with planar magnetic textures, like 90° pinned magnetic domain walls (DWs), which forms in hybrid multilayers consisted of ferromagnetic and ferroelectric layers [3,4]. In this seminar, we shall discuss possible applications of 90° magnetic DWs in future skyrmion-based spintronic devices [5].


[1] K.-W. Moon, J. Yoon, C. Kim, and C. Hwang, Phys. Rev. Appl. 12, 064054 (2019).
[2] A. O. Leonov, and I. Kézsmárki, Phys. Rev. B 96, 014423 (2017).
[3] B. V. de Wiele, S. J. Hämäläinen, P. Baláž, F. Montoncello, and S. van Dijken, Sci. Rep. 6, 1 (2016).
[4] P. Baláž, S. J. Hämäläinen, and S. van Dijken, Phys. Rev. B 98, 064417 (2018).
[5] P. Baláž, Phys. Rev. Applied 17, 044031 (2022).

Seminar on Condensed Matter Theory

Group of Theoretical Physics organizes a regular seminar on theory of condensed matter physics.

Usually, we meet
every Thursdays at 13:00
in seminar room F 052
Ke Karlovu 5, 121 16 Praha 2.

You are welcome to join us!

If you wish to receive regular updates on fothcoming seminars, contact K. Carva.