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SUMMARY:Nonequilibrium Materials Engineering - Dr. Michael Sentef\, Max Pl
 anck Institute for the Structure and Dynamics of Matter\, Hamburg
DTSTART:20190606T131500Z
DTEND:20190606T141500Z
UID:TALK117073@talks.cam.ac.uk
CONTACT:Katarzyna Macieszczak
DESCRIPTION:The interaction of light and matter is at the heart of spectro
 scopies in condensed matter. With the\ndevelopment of ultra-short and ultr
 a-strong laser pulses for pump-probe experiments\, light is\ntransforming 
 from a tool to probe towards a tool to control and manipulate quantum many
 -body\nsystems while driving them far away from their thermal equilibrium.
  In my presentation\, I will\ndiscuss our recent theoretical and computati
 onal progress towards a microscopic understanding\nof light-driven solids 
 with the long-term vision of nonequilibrium materials engineering.\nFirst 
 I will present a study on ultrafast optical control of chiral Majorana mod
 es in topological\nsuperconductors [1]\, in which we present a pump pulse 
 protocol allows for optical switching of an\norder parameter purely on sym
 metry grounds\, which implies that it works both in the high-\nfrequency (
 „Floquet“) and low-frequency limits. Then I will show results for a ca
 vity quantum-\nelectrodynamical modification of electron-phonon coupling a
 nd superconductivity in monolayer\nFeSe/SrTiO [2]\, in which the pure vacu
 um fluctuations of a confined photon field are used to\nengineer materials
  properties.\n\n[1] M. Claassen\, D. M. Kennes\, M. Zingl\, M. A. Sentef\,
  A. Rubio\, arXiv:1810.06536\, Nature Physics\n(2019) https://www.nature.c
 om/articles/s41567-019-0540-6\n\n[2] M. A. Sentef\, M. Ruggenthaler\, A. R
 ubio\, Science Advances 4\, eaau6969 (2018)
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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