BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261021T220833Z
LAST-MODIFIED:20131021T141729Z
DTSTART:20131023T193000Z
DTEND:20131023T203000Z
UID:event1151@bu.edu
URL:http://physics.bu.edu/internal/events/show/1151
SUMMARY:Ultrafast Spectroscopy of Strongly Correlated Systems Dynamics of t
	he Insulator-Metal Transition
DESCRIPTION:Featuring Elsa Abreu\n\nPart of the Departmental Seminars.\n\nD
	issertation committee:\n\nRichard Averitt\, Shyam Erramilli\, Claudio Chamo
	n\, Kevin Smith\, Robert Carey\n![Elsa](/resources/event-image/1151/8247751
	_small)\n\n\nAbstract\nMetal-insulator transitions (MITs) are a striking ma
	nifestation of the interactions between the various degrees of freedom in c
	omplex materials. Under certain conditions of temperature\, doping\, pressu
	re or photoexcitation a material can change one or several of its electroni
	c\, structural\, spin or orbital arrangements and undergo a MIT. Such trans
	itions can be probed statically or dynamically\, through ultrafast snapshot
	s of the material’s properties following a specific\, controlled excitati
	on. Photoinduced phase transitions are an ideal path to study the dynamical
	 behavior of the different degrees of freedom as well as their individual c
	ontribution to the alterations in the material’s macroscopic response and
	 to the timescale on which these alterations occur.\nTypical examples of MI
	Ts are those of vanadium dioxide (VO2) and vanadium sesquioxide (V2O3)\, wh
	ich in bulk and at atmospheric pressure occur at 340K (VO2) and 160K (V2O3)
	. This talk focuses on the investigation of the dynamics of the insulator t
	o metal transition in single crystalline thin films of V2O3 following optic
	al or far infrared excitation. Conductivity dynamics induced ¬by an ultraf
	ast photoexcitation enable the understanding of the mechanism of nucleation
	 and growth that eventually gives rise to the metallic state in V2O3. These
	 results will be put in the context of past and future studies of transitio
	n metal oxides using optical and far infrared spectroscopies\, with an emph
	asis on the developing field of nonlinear THz spectroscopy.
LOCATION:PRB 365\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR