Tracking the relaxation pathway of photo-excited electrons in 1T-TiSe2
1 Institute of Experimental and Applied Physics, University of Kiel, 24118 Kiel, Germany
2 JILA, University of Colorado and NIST, Boulder, Co 80309-0440, USA
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Revised: 12 May 2013
Published online: 15 July 2013
The ultrafast dynamics of excited electrons in 1T-TiSe2 after absorption of a 390 nm light pulse is probed by time- and angle-resolved photoemission spectroscopy using femtosecond XUV pulses. It is demonstrated that the experimental approach can provide a comprehensive view of hot carrier motion in momentum space during relaxation back to equilibrium. This capability opens a new avenue in the investigation of energy dissipation processes in solids after intense optical excitation.
© EDP Sciences, Springer-Verlag, 2013