Finite temperature inelastic mean free path and quasiparticle lifetime in graphene
- 5 February 2013
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 87 (8)
- https://doi.org/10.1103/physrevb.87.085406
Abstract
We adopt the and random phase approximations to study finite temperature effects on the inelastic mean free path and quasiparticle lifetime by directly calculating the imaginary part of the finite temperature self-energy induced by electron-electron interaction in extrinsic and intrinsic graphene. In particular, we provide the density-dependent leading order temperature correction to the inelastic scattering rate for both single-layer and double-layer graphene systems. We find that the inelastic mean free path is strongly influenced by finite-temperature effects. We present the similarity and the difference between graphene with linear chiral band dispersion and conventional two-dimensional electron systems with parabolic band dispersion. We also compare the calculated finite temperature inelastic scattering length with the elastic scattering length due to Coulomb disorder and comment on the prospects for quantum interference effects showing up in low-density graphene transport. We also carry out inelastic scattering calculation for electron-phonon interaction, which by itself gives rather long carrier mean free paths and lifetimes since the deformation potential coupling is weak in graphene, and therefore electron-phonon interaction contributes significantly to the inelastic scattering only at relatively high temperatures. DOI: http://dx.doi.org/10.1103/PhysRevB.87.085406 ©2013 American Physical Society
Keywords
Other Versions
This publication has 41 references indexed in Scilit:
- Dirac cones reshaped by interaction effects in suspended grapheneNature Physics, 2011
- Electron-electron interactions in the conductivity of graphenePhysical Review B, 2010
- Kohn anomaly and interplay of electron-electron and electron-phonon interactions in epitaxial graphenePhysical Review B, 2008
- Many-body exchange-correlation effects in graphenePhysica E: Low-dimensional Systems and Nanostructures, 2008
- Plasmons and the spectral function of graphenePhysical Review B, 2008
- Many-body interaction effects in doped and undoped graphene: Fermi liquid versus non-Fermi liquidPhysical Review B, 2007
- Quasiparticle dynamics in grapheneNature Physics, 2006
- Two-dimensional gas of massless Dirac fermions in grapheneNature, 2005
- Two-dimensional atomic crystalsProceedings of the National Academy of Sciences of the United States of America, 2005
- Electric Field Effect in Atomically Thin Carbon FilmsScience, 2004