Title :
Ultrafast non-thermal electron dynamics in single layer graphene
Author :
Brida, Daniele ; Manzoni, Cristian ; Cerullo, Giulio ; Tomadin, A. ; Polini, M. ; Nair, Reshma R. ; Geim, A.K. ; Novoselov, K.S. ; Milana, S. ; Lombardo, Alfio ; Ferrari, A.C.
Author_Institution :
Dept. of Phys., Univ. of Konstanz, Konstanz, Germany
Abstract :
The impulsive optical excitation of carriers in graphene creates an out-of-equilibrium distribution, which thermalizes on an ultrafast timescale [1-4]. This hot Fermi-Dirac (FD) distribution subsequently cools via phonon emission within few hundreds of femtoseconds. While the relaxation mechanisms mediated by phonons have been extensively investigated, the initial stages, ruled by fundamental electron-electron (e-e) interactions still pose a challenge.
Keywords :
electron-electron interactions; electron-phonon interactions; fermion systems; graphene; high-speed optical techniques; hot carriers; C; fundamental electron-electron (interactions; hot Fermi-Dirac distribution; impulsive optical carrier excitation; out-of-equilibrium distribution; phonon emission; relaxation mechanisms; single layer graphene; ultrafast nonthermal electron dynamics; ultrafast timescale thermalization; Educational institutions; Graphene; Nonlinear optics; Optical pulses; Optical pumping; Probes; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6801039
