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VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260827T223422Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20111111T170000Z
DTEND:20111111T180000Z
UID:event190@bu.edu
URL:http://physics.bu.edu/internal/events/show/190
SUMMARY:Magnetic properties and ultra-fast relaxation in systems of molecul
	ar nanomagnets
DESCRIPTION:Featuring Prof. Victor Henner\, Perm State University\, Perm\, 
	Russia and University of Louisville\, Louisville\, KY\nHosted by: Richard A
	veritt\n\nPart of the Biophysics/Condensed Matter Seminar Series.\n\nAbstra
	ct\nVarious coherent magneto-dynamical effects can lead to a phenomenon qua
	litatively similar to optical superradiation (SR). The electromagnetic radi
	ation emitted by an assembly of nano-entities (molecular crystals with sing
	le-molecule spins as large as 10\, nanometer particles of ferromagnets with
	 macrospins of the order of 103-104\, dots\, grains\, etc.) by way of the f
	eedback effect establishes their coherence thus greatly reducing the durati
	on and enhancing the intensity of the deexcitation pulse. The radiation int
	ensity is proportional to up the squared number of the spins in the system 
	and the relaxation time is inversely proportional to the number of spins in
	volved in the coherent motion. For nanostructures with strong confinements\
	, SR becomes the main mechanism of relaxation to the ground state. Study of
	 SR from molecular nanomagnets with strong indirect coupling and magnetic a
	nisotropy requires the formulation of a microscopic theory describing dynam
	ics and relaxation in such systems and allowing for computer simulations of
	 the effect.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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