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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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    Computational Techniques for Predicting Spintronic Devices

			   Jay Sullivan
	    Center for Computational Materials Science,
	      Naval Research Laboratory, Washington DC

The viability of nearly all spintronics applications rests on the 
ability to introduce, in a controlled and reproducible manner, 
individual electron spins into a non-magnetic host material.  Being 
a reflection of the intrinsic magnetic moment every electron possesses, 
electron spin can be influenced by applied magnetic fields and can, 
in turn, dramatically affect the electrical properties of a device.  
Thus the introduction of individual electron spins, commonly referred 
to as “spin-injection”, allows one to explore regions of device 
operation that would otherwise be inaccessible.  We briefly review a
theoretical approach that allows us to evaluate candidate spin-injection
devices, as well as the computational tools and techniques by which 
this approach is implemented. Results for a device composed of 
CdCr2Se4, an intrinsic ferromagnetic semiconductor, grown in contact 
with Si or GaAs substrates are presented. 

                       Monday , September 24, 2001
                               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