Title :
Ultrabroadband THz conductivity of non-equilibrium Dirac fermions in graphene
Author :
Coslovich, G. ; Smith, R.P. ; Shi, S.-F. ; Buss, J.H. ; Robinson, J.T. ; Wang, F. ; Kaindl, R.A.
Author_Institution :
Mater. Sci. Div., Lawrence Berkeley Nat. Lab., Berkeley, CA, USA
Abstract :
We employ ultrabroadband THz pulses to expose the high-frequency transport of non-equilibrium Dirac fermions in graphene. Tuning the Fermi level reveals a transient response characteristic of high-energy photo-excited carriers with strongly enhanced interactions.
Keywords :
Fermi level; fermions; graphene; high-speed optical techniques; optical conductivity; C; Fermi level; graphene; high-energy photo-excited carriers; high-frequency transport; nonequilibrium Dirac fermions; ultrabroadband THz conductivity; Conductivity; Graphene; Optical pulses; Optical pumping; Optical scattering; Spectroscopy; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
