Possibility of magnetic field induced Composite Fermi sea in neutral Graphene

Details Possibility of magnetic field induced Composite Fermi sea in neutral Graphene Possibility of magnetic field induced Composite Fermi sea in neutral Graphene

2007-02-18

arxiv.org/abs/cond-mat/0702420v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Neutral graphene in strong magnetic fields is believed to be an (exchange stabilized) integer Hall state of completely filled up spin (say) and empty down spin bands of n = 0, two fold valley degenerate Landau levels. We suggest that correlation energy gain from a nearly SU(4) singlet (2 spin $\times$ 2 valley) composite fermi sea formation, at $\nu \approx$ \hlf filling for each component, destabilizes ferromagnetic integer quantum Hall state. This radically different scenario is consistent with a dissipative gapless state seen in experiments in neutral graphene. Interesting paired Hall states are possible, from residual interactions, in this SU(4) fermi sea with a small Zeeman spin polarization.

Affiliated with

Also associated with

No associations

Rating

Possibility of magnetic field induced Composite Fermi sea in neutral Graphene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Possibility of magnetic field induced Composite Fermi sea in neutral Graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Possibility of magnetic field induced Composite Fermi sea in neutral Graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-591412