The quantum Hall effect in graphene - a theoretical perspective

作者：Goerbig Mark O^*

来源：Comptes Rendus Physique, 2011, 12(4): 369-378.

DOI：10.1016/j.crhy.2011.04.012

• Graphene
• Strong magnetic fields
• Quantum Hall effects

This short theoretical review deals with some essential ingredients for the understanding of the quantum Hall effect in graphene in comparison with the effect in conventional two-dimensional electron systems with a parabolic band dispersion. The main difference between the two systems stems from the "ultra-relativistic" character of the low-energy carriers in graphene, which are described in terms of a Dirac equation, as compared to the non-relativistic Schrodinger equation used for electrons with a parabolic band dispersion. In spite of this fundamental difference, the Hall resistance quantisation is universal in the sense that it is given in terms of the universal constant h/e(2) and an integer number, regardless of whether the charge carriers are characterised by Galilean or Lorentz invariance, for non-relativistic or relativistic carriers, respectively.

• 出版日期2011-5