The Faculty of Physics cordially invites you to ISQI Seminar on "Between statics and dynamics of magnetization in magnetic films", given by dr Jan Kisielewski from the University of Białystok.
The event will be held on March 16, 2023, between 3 p.m. - 4 p.m.
We study the spin-wave-induced spin reorientation transition (SRT) in magnetic films with uniaxial magnetic anisotropy and Dzyaloshinskii-Moriya (DMI) interaction. In particular, we show that propagating spin waves can freeze in SRT, causing periodic magnetic domains to arise, being a reminiscent of the wave amplitude distribution. This process can take place under the influence of a change in the magnetic field, magnetic anisotropy, film thickness, or magnitude of DMI. Interestingly, inherent to DMI non-reciprocity leads at SRT to emergence of flowing magnetization patterns, which suggests a spontaneous breaking of translational symmetry, and formation of magnonic space-time crystals. The described phenomena are general and should take place in a large family of magnetic materials.
More information about the seminar is available here.