Functional approach to electrodynamics of media

• Verfasst von: Starke, Ronald [VerfasserIn]
• Verfasst von: Schober, Giulio Albert Heinrich [VerfasserIn]
• Titel: Functional approach to electrodynamics of media
• Verf.angabe: R. Starke, G.A.H. Schober
• E-Jahr: 2015
• Jahr: 12 February 2015
• Umfang: 34 S.
• Fussnoten: Gesehen am 22.06.2020
• Titel Quelle: Enthalten in: Photonics and nanostructures
• Ort Quelle: Amsterdam : Elsevier, 2003
• Jahr Quelle: 2015
• Band/Heft Quelle: 14(2015), Seite 1-34
• ISSN Quelle: 1569-4410
• DOI: doi:10.1016/j.photonics.2015.02.001
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Bi-anisotropy
• Sach-SW: First-principles calculation
• Sach-SW: Magnetization
• Sach-SW: Multiferroics
• Sach-SW: Polarization
• Sach-SW: Relativity
• K10plus-PPN: 1701720701

Abstract

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.