RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

Many-body exchange-correlation effects in graphene

TitleMany-body exchange-correlation effects in graphene
Publication TypeJournal Article
Year of Publication2008
AuthorsE. H. Hwang, B Y-K. Hu, and S. Das Sarma
JournalPhysica E: Low-dimensional Systems and Nanostructures
Date Publishedmar
Keywords2008, Single Fellow

We calculate, within the leading-order dynamical-screening approximation, the electron self-energy and spectral function at zero temperature for extrinsic (or gated/doped) graphene. We also calculate hot carrier inelastic scattering due to electron-electron interactions in graphene. We obtain the inelastic quasiparticle lifetimes and associated mean free paths from the calculated self-energy. The linear dispersion and chiral property of graphene gives energy dependent lifetimes that are qualitatively different from those of parabolic-band semiconductors.


Subscribe to A Quantum Bit 

Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...

Sign Up Now

Sign up to receive A Quantum Bit in your email!

 Have an idea for A Quantum Bit? Submit your suggestions to