Dresden 2017 – scientific programme
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MA: Fachverband Magnetismus
MA 68: Poster 5
MA 68.5: Poster
Friday, March 24, 2017, 09:30–13:00, P2-OG4
Functional approach to electrodynamics of media — •Ronald Starke1 and Giulio Schober2 — 1Institut für Theoretische Physik, TU Bergakademie Freiberg, Leipziger Str. 23, 09596 Freiberg — 2Institute for Theoretical Physics, Heidelberg University, Philosophenweg 19, 69120 Heidelberg
By a systematic investigation of the mutual functional dependencies between induced, external and total electromagnetic field quantities we derive universal (material-independent) relations between electromagnetic response functions such as the dielectric tensor, the magnetic susceptibility and the microscopic conductivity tensor. Our formulae can be reduced to well-known identities in special cases, but more generally include the effects of inhomogeneity, anisotropy, magneto-electric cross-coupling and relativistic retardation. If combined with the Kubo formalism, they would therefore lend themselves to the ab initio calculation of all linear electromagnetic response functions, thus paving the way for a first-principles description of magneto-electric materials for spintronics applications.