Functional approach to electrodynamics of media

Autor(en)

R. Starke, G. A. H. Schober

Abstrakt

In this article, we put forward a new approach to electrodynamics of materials. Based on the identification of induced electromagnetic fields as the microscopic counterparts of polarization and magnetization, we systematically employ the mutual functional dependencies of induced, external and total field quantities. This allows for a unified, relativistic description of the electromagnetic response without assuming the material to be composed of electric or magnetic dipoles. Using this approach, 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, magnetoelectric coupling and relativistic retardation. If combined with the Kubo formalism, they would also lend themselves to the ab initio calculation of all linear electromagnetic response functions.

Organisation(en)

Computergestützte Materialphysik

Externe Organisation(en)

Universität Heidelberg, Technische Universität Bergakademie Freiberg

Journal

Photonics and nanostructures-Fundamentals and Applications

Band

14

Seiten

1-34

Anzahl der Seiten

34

ISSN

1569-4410

DOI

https://doi.org/10.1016/j.photonics.2015.02.001

Publikationsdatum

04-2015

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103036 Theoretische Physik, 103015 Kondensierte Materie, 103009 Festkörperphysik

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Hardware and Architecture

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/ec254c65-94fc-4cd4-a6e9-67d102819c6c