Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session K38: Light Induced Structural Control of Electronic Phases II
3:00 PM–6:00 PM,
Tuesday, March 7, 2023
Room: Room 230
Sponsoring
Unit:
DMP
Chair: Daniele Fausti, Elettra Sincrotrone Trieste
Abstract: K38.00006 : Ultrafast Raman thermometry for photo-induced superconductivity in YBa2Cu3O6.5
4:24 PM–4:36 PM
Presenter:
Ting-Han Chou
(Max Planck Institute for the Structure and Dynamics of Matter)
Authors:
Ting-Han Chou
(Max Planck Institute for the Structure and Dynamics of Matter)
Michael Först
(Max Planck Institute for the Structure and Dynamics of Matter)
Meredith Henstridge
(Research Assoc-Experimental, SLAC National Accelerator Laboratory)
Michael Fechner
(Max Planck Institute for the Structure and Dynamics of Matter)
Juan P Porras
(Max Planck Institute for Solid State Research)
Bernhard Keimer
(Max Planck Institute for Solid State Research)
Andrea Cavalleri
(Max Planck Institute for the Structure and Dynamics of Matter)
To this end, we performed time-resolved spontaneous Raman experiments on optically excited YBa2Cu3O6.5. For the different excitation frequencies, we compared the timescales of electron-phonon and phonon-phonon interactions. The temporal evolution of incoherent phonon populations signifies transient changes of the lattice temperature, providing new insight into the non-equilibrium dynamics associated with light-induced superconductivity.
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