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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20261018T141023Z
LAST-MODIFIED:20171002T180812Z
DTSTART:20171013T160000Z
DTEND:20171013T173000Z
UID:event1821@bu.edu
URL:http://physics.bu.edu/internal/events/show/1821
SUMMARY:"Coherent optical control and nonlinear probing of strongly correla
	ted materials"
DESCRIPTION:Featuring Roman Mankowsky\, Paul Scherrer Institute \nHosted by
	: Wanzheng Hu\n\nPart of the Condensed Matter Theory Seminar Series.\n\nMid
	-infrared optical pulses can resonantly drive selected vibrational modes in
	 solids to deform their crystal structure. In strongly correlated materials
	\, this method has been used to melt electronic and magnetic order\, drive 
	insulator-to-metal transitions\, and transiently induce superconductivity. 
	Free Electron Lasers have been key in identifying the lattice dynamics unde
	rlying these transitions.\n\nIn this talk\, I will first review nonlinear p
	hononics and discuss its role in the phenomenon of light-induced supercondu
	ctivity. I will then present recent studies\, in which resonant lattice exc
	itation was used to control the polarization of ferroelectric materials on 
	femtosecond timescales. These studies are a first step toward ultrafast rev
	ersible switching. In the last part of the lecture\, I will focus on the ex
	citation of highly nonlinear lattice dynamics\, a new technique which allow
	ed us to reconstruct the interatomic lattice potential of a solid and bench
	mark first principle calculations.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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