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Title:The role of non-equilibrium dynamics in photo-induced phase transitions of correlated materials
Authors:Urbančič, Jurij (Author)
et al.
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Work type:Not categorized (r6)
Tipology:1.12 - Published Scientific Conference Contribution Abstract
Organization:UNG - University of Nova Gorica
Abstract:We use femtosecond extreme-ultraviolet time- and angle-resolved photoelectron spectroscopy to study the ultrafast photo-induced suppression of the charge-density wave (CDW) in 1T-TiSe2. In the following non-equilibrium electron dynamics after femtosecond laser excitation, we see that hot-carrier multiplication is the primary driver for the ultrafast CDW suppression. As soon as the optically excited carriers have relaxed to a quasi-equilibrium hot Fermi-distribution electron gas, the CDW suppression stops. Theoretical calculations of the hot-carrier scattering processes and the screening properties further link the carrier multiplication to the observed CDW gap dynamics.
Keywords:Correlated Materials, High Harmonic Generation, ARPES
Year of publishing:2015
COBISS_ID:16574979 Link is opened in a new window
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Record is a part of a monograph

Title:DPG-Frühjahrstagungen 2015
Place of publishing:Berlin
Year of publishing:2015