Send to

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2007 May 25;98(21):216401. Epub 2007 May 21.

Anomalous thermodynamics of Coulomb-interacting massless Dirac fermions in two spatial dimensions.

Author information

  • 1National High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee, Florida 32306, USA.


It is argued that the specific heat of N massless Dirac fermions in two spatial dimensions interacting with 1/r Coulomb interactions is suppressed logarithmically relative to its noninteracting counterpart. The (dimensionless) coefficient of the logarithm is calculated in a closed form in the leading order in large N expansion, but to all orders in the effective fine structure constant, alpha(F), a procedure which takes into account finite temperature screening. This effect is expected to occur in a single-layer graphene embedded in a dielectric medium. Its dependence on the dielectric constant is calculated analytically.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Support Center