Theory of optically forbidden d–d transitions in strongly correlated crystals

Link:

https://doi.org/10.1088/0953-8984/22/38/382201

Autor/in:

Erscheinungsjahr:

2010

Medientyp:

Text

Beschreibung:

A general multiband formulation of the linear and nonlinear optical response functions for realistic models of correlated crystals is presented. Dipole-forbidden d-d optical transitions originate from vertex functions, which we consider assuming the locality of an irreducible four-leg vertex. The unified formulation for second- and third-order response functions in terms of the three-leg vertex is suitable for practical calculations in solids. We illustrate the general approach by consideration of intra-atomic spin-flip contributions, with an energy of 2 J, where J is a Hund exchange, in the simplest two-orbital model. © 2010 IOP Publishing Ltd.

Lizenz:

info:eu-repo/semantics/closedAccess

Quellsystem:

Forschungsinformationssystem der UHH

Interne Metadaten

Quelldatensatz: oai:www.edit.fis.uni-hamburg.de:publications/2af4be01-757b-4f79-b8fd-f28543eadcb6