Eur. Phys. J. Special Topics 222, 997-1004 (2013)
https://doi.org/10.1140/epjst/e2013-01901-5

Regular Article

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

^a e-mail: rohde@physik.uni-kiel.de

Received: 18 March 2013
Revised: 12 May 2013
Published online: 15 July 2013

Abstract

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.