Table of Contents
Research Letters in Physics
Volume 2008, Article ID 749305, 4 pages
http://dx.doi.org/10.1155/2008/749305
Research Letter

Optics of Chromites and Charge-Transfer Transitions

Modeling of Controllable Systems, Ural State Technical University, 620002 Ekaterinburg, Russia

Received 26 May 2008; Accepted 9 July 2008

Academic Editor: Ali Hussain Reshak

Copyright © 2008 Andrei V. Zenkov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Specific features of the charge-transfer (CT) states and O2pCr3d transitions in the octahedral (CrO6)9 complex are considered in the cluster approach. The reduced matrix elements of the electric-dipole transition operator are calculated on many-electron wave functions of the complex corresponding to the initial and final states of a CT transition. Modeling the optic spectrum of chromites has yielded a complicated CT band. The model spectrum is in satisfactory agreement with experimental data which demonstrates the limited validity of the generally accepted concept of a simple structure of CT spectra.