BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20240329T091605Z
UID:https://www.mpsd.mpg.de/events/9220/2724
DTSTART:20170307T133000Z
DTEND:20170307T143000Z
CLASS:PUBLIC
CREATED:20170306T150325Z
DESCRIPTION: In light of recent experiments suggesting light-induced superc
onductivity [1] as well as light-enhanced electron-lattice coupling [2] fo
r strongly driven IR phonons\, it is natural to ask for a minimal and gene
ric theoretical model that predicts such enhancement effects of important
couplings in different material classes. One idea that comes to mind is no
nlinear electron-phonon coupling [3\,4]. A quadratic coupling term of the
form " g2 nel x2IR
i> " is generically the lowest order symmetry-allowed direct coupling of a
n IR-active phonon coordinate xIR to the electronic dens
ity nel in systems with inversion symmetry. In this talk
I will present model evidence for light-enhanced electron-phonon coupling
and light-induced effective attraction between electrons based on nonline
ar electron-phonon coupling [3]\, the latter of which was already discusse
d in a similar context in [4]. [1] M. Mitrano et al.\, Nature 530\, 461 (2
016) [2] E. Pomarico et al.\, Phys. Rev. B 95\, 024304 (2017) [3] M. A. Se
ntef\, arXiv: 1702.00952 [4] D. M. Kennes et al.\, Nature Physics (2017) \
, doi:10.1038/nphys4024\, arXiv:1609.03802\nVortragende(r): Michael Sentef
LAST-MODIFIED:20170306T150539Z
LOCATION:CFEL (Bldg. 99)\, Raum: Seminar Room IV\, O1.111
ORGANIZER:Angel Rubio
SUMMARY:MPSD Seminar: Michael Sentef - Light-enhanced electron-phonon coup
ling from nonlinear electron-phonon coupling
URL:https://www.mpsd.mpg.de/events/9220/2724
END:VEVENT
END:VCALENDAR