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   COLLOQUIUM OF THE LABORATORY FOR COMPUTER DESIGN OF MATERIALS
                   School of Computational Sciences
                           (CSI 898-Sec 001)
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         Pauli principle and the low-lying magnetic 
             excitations in itinerant systems

                       Samed Halilov
              Center for Computational Materials Science
           Naval Research Laborator, Washington, DC  20375

The adiabatic theory of low-lying magnetic excitations
is developed on the basis of spin density functional theory (SDFT).
The central assumption of multi-time scale allows to introduce 
the concept of adiabatic magnetic moments formed by the itinerant 
electrons and to construct effective adiabatic spin Hamiltonian 
suitable for generally non-Heisenberg systems. The strong Kohn 
anomalies in Fe are predicted. Remarkable dynamic renormalization 
of the RKKY interaction is motivated and shown within SDFT to 
significantly influence the magnon spectra of heavy rare-earth 
metals. 

                         Monday , March 4, 2002
                                  4:30 pm
                        Room 206, Science & Tech. I

Refreshments will be served at 4:15 PM.
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Find the schedule at http://www.csi.gmu.edu/lcdm/seminar/schedule.html