20.500.12556/RUNG-5466-6573556e-fcf7-5376-87f6-0414549ffe34
The role of non-equilibrium dynamics in photo-induced phase transitions of correlated materials
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.
Correlated Materials
High Harmonic Generation
ARPES
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true
false
Angleški jezik
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2020-05-22 12:31:52
2020-05-22 12:38:12
2023-06-09 03:38:44
0000-00-00 00:00:00
2015
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2015
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16574979
URN:SI:UNG:REP:FBVQNCKN
Univerza v Novi Gorici
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