Interactions in graphene

The electrons in graphene are particularly nimble and their interactions are usually ignored together with the effects of some defects. However, recently more and more attention have been paid to them, e.g., about superconductivity and other new orders. Here is a brief summary by P. Guinea [http://www.condmatjournalclub.org/wp-content/uploads/2011/09/JCCM_SEPTEMBER_2011_01.pdf].

1. Broken symmetry states and divergent resistance in suspended
bilayer graphene
Benjamin E. Feldman, Jens Martin, Amir Yacoby,
arXiv:0909.2883, Nature Physics 5, 889 (2009)
2. Local Compressibility Measurements of Correlated States in
Suspended Bilayer Graphene
Jens Martin, Benjamin E. Feldman, R. Thomas Weitz, Monica T. Allen,
Amir Yacoby,
arXiv:1009.2069, Phys. Rev. Lett. 105, 256806 (2010)
3. Interaction-Driven Spectrum Reconstruction in Bilayer Graphene
A. S. Mayorov, D. C. Elias, M. Mucha-Kruczynski, R. V. Gorbachev, T. Tu-
dorovskiy, A. Zhukov, S. V. Morozov, M. I. Katsnelson, V. I. Fal'ko, A. K.
Geim, K. S. Novoselov,
arXiv:1108.1742, Science 333, 860 (2011)
4. Transport Spectroscopy of Symmetry-Broken Insulating States
in Bilayer Graphene
J. Velasco Jr., L. Jing, W. Bao, Y. Lee, P. Kratz, V. Aji, M. Bockrath, C.N.
Lau, C. Varma, R. Stillwell, D. Smirnov, Fan Zhang, J. Jung,
A.H. MacDonald
arXiv:1108.1609