2009/06/30 by Paulina Płochocka, P. Plochocka, P. Kossacki +7 · 112 citations
Materials Science · Physics and Astronomy · #Atomic physics #Carbon Nanotubes in Composites #Condensed matter physics #Degenerate energy levels #Dirac fermion #Electron #Equidistant #Graphene #Graphene research and applications #Magnetic field #Materials science #Nanotechnology #Physics #Quantum and electron transport phenomena #Quantum mechanics #Relaxation (psychology) #Scattering #Thermalisation #cond-mat.mes-hall #cond-mat.other
paper · pdf · doi:10.1103/physrevb.80.245415
published in Physical Review B 80(24) (American Physical Society) · 5 pages, 4 figures
openalex publication_date 2009/12/10 · arxiv created 2009/12/11 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A degenerate pump-probe technique is used to investigate the nonequilibrium carrier dynamics in multilayer graphene. Two distinctly different dynamics of the carrier relaxation are observed. A fast relaxation (\ensuremath∼50 fs) of the carriers after the initial effect of phase-space filling followed by a slower relaxation (\ensuremath∼4 ps) due to thermalization. Both relaxation processes are less efficient when a magnetic field is applied at low temperatures which is attributed to the suppression of the electron-electron Auger scattering due to the nonequidistant Landau-level spacing of the Dirac fermions in graphene.