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BEGIN:VEVENT
DTSTAMP:20261020T074256Z
LAST-MODIFIED:20130829T185644Z
DTSTART:20130904T150000Z
DTEND:20130904T160000Z
UID:event1074@bu.edu
URL:http://physics.bu.edu/internal/events/show/1074
SUMMARY:Rotating Kekulé mass in graphene: a 'hydrogen atom' for non-equili
	brium quantum systems
DESCRIPTION:Featuring Tom Iadecola\, Boston University\, Physics\n\nPart of
	 the Condensed Matter Theory Seminar Series.\n\nAbstract:\nDriven condensed
	 matter systems are emerging as subjects of great theoretical and experimen
	tal interest due to the possibility of using external driving to engineer n
	ovel properties in materials.  Nevertheless\, such systems consistently pos
	e substantial challenges to theoretical understanding; their statistical me
	chanics lacks intuitive basic principles\, even at zero temperature\, and t
	heir thermodynamic behavior is generally quite complicated.  In this talk\,
	 we present a case study of the rotating Kekulé mass in graphene [PRL 110\
	, 176603 (2013)]\, which provides a setting where these concerns can be stu
	died in detail.  The rotating mass\, which is generated by driving an optic
	al phonon mode\, modifies substantially the properties of un-driven graphen
	e.  For instance the rotating Kekulé mass may provide an experimentally fe
	asible route to generating tunable band gaps in graphene.  Furthermore\, it
	 generates topologically protected pumping phenomena\, which include the tr
	ansport of fractional charge around the edges of a finite sample.  Finally\
	, the thermodynamics of the system admits a remarkably simple description i
	n terms of a "generalized energy\," which allows us to recover an intuitive
	 understanding of the system based on equilibrium statistical mechanics.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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