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Lecture G. Lefkidis


09 maart 2006 FWN-Building 5113.0201, Nijenborgh 4, 9747 AG, Groningen
Speaker:Dr. G. Lefkidis
Affiliation:Kaiserslautern University of Technology
Title:Nonlinear (magneto-)optics in antiferromagnetic exides
Date:Thu Mar 9, 2006
Location:FWN-Building 5113.0201
Host:R. Broer
Telephone:+31 50 363 4374


Optical second harmonic generation is a unique tool that allows to disentangle ferro- and antiferromagnetic domains. As such it may serve as a probe for the detection and monitoring of ultrafast magnetic dynamics. We will present ab initio results for the investigation of local and nonlocal contributions to the nonlinear response of the (001) surface and the bulk of NiO, as well as the effects of population redistribution, and phonons within the frozen phonon approximation. NiO is modeled as a doubly embedded cluster on which two different correlated quantum chemistry methods (multiconfigurational complete active space [MC-CAS] and configuration interaction with single excitations ) are applied in order to obtain the wave functions of all the experimentally observed intragap d-states and the low-lying charge-transfer states.
Laatst gewijzigd:22 oktober 2012 14:30