Seminarium Fizyki Ciała Stałego
sala 0.06, ul. Pasteura 5
2023-12-08 (10:15) 
dr Maciej Koperski (Institute for Functional Intelligent Materials , National Universtiy of Singapore)
Topological spin textures coupled to optical and electrical excitations in insulating van der Waals ferromagnets
Magnetization in insulating van der Waals systems may form distincttextures strongly dependent on the film thickness. These may be directlyvisualized via magnetic force microscopy and/or Lorentz transmissionelectron microscopy, leading to emergence of multiple magnetic states(stripe domains or topologically protected skyrmions) that can besystematized in form of T-B phase diagram. The micromagnetic simulationssupport the experimental observations, granting insight into theinterplay between spin-spin interactions (exchange coupling, dipolarand/or Dzyaloshinskii–Moriya interaction, etc.). It is tempting toexplore how optical excitations (excitons exhibiting mixed Frenkel andcharge-transfer characteristics) and electrically injected chargecarriers in vertical tunnelling junctions interact with magnetic order.Overall, a strongly correlated system arises exhibiting coupling betweencharge carriers and magnetization, consequently providing a variety ofcontrol knobs for its optoelectronic and magnetic properties.UwagaSeminarium w trybie HybrydowymFaculty of Physics room 0.06link to remote mode:https://zoom.us/j/7218838148szczegóły patrz instrukcja :instrukcja: (pdf file)AttentionThe seminar in the Hybrid modeFaculty of Physics room 0.06for details see instruction :instruction: (pdf file)