Seminar: Equations in magnetization dynamics

  • Date:
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1 Room 64119
  • Lecturer: Jonas Fransson
  • Contact person: Jonas Fransson
  • Seminarium

As a physicist, my job is to work out a comprehensive physical picture from the equations I can access and derive. Typically, these equations are non-linear partial differential equations that depend on the environment, in both space and time, and, normally cannot solve these equations. I will present some physical background and concepts that provides a route to studying magnetization dynamics. The basic formulation of the dynamics is a spatially and temporally non-local and non-linear ordinary differential equation with respect to the time-variable. However, through a set of natural physical arguments, the equation can be turned into a non-linear partial differential equation. The physical content and interpretations will be discussed at the different levels of approximations. Input on how to go about with the mathematics is highly desired.

References:

[1] S. Bhattacharjee, L. Nordström, and  J. Fransson, Phys. Rev. Lett. 108, 057204 (2012).

[2] J. Fransson, D. Thonig, P. F. Bessarab, S. Bhattacharjee, J. Hellsvik, and L. Nordström, Phys. Rev. Materials, 1, 074404 (2017).