S. Eich (Author), Jurij Urbančič (Author)

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;

Data

Language: English
Year of publishing:
Typology: 1.12 - Published Scientific Conference Contribution Abstract
Organization: UNG - University of Nova Gorica
UDC: 53
COBISS: 16574979 Link will open in a new window
Views: 2199
Downloads: 0
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
ID: 11725055