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Fractional Quantum Hall Effect in Graphene: Quantitative Comparison between Theory and Experiment
Ajit C. Balram, Csaba Tőke, A. Wójs +1
The observation of extensive fractional quantum Hall states in graphene brings out the possibility of more accurate quantitative comparisons between theory and experiment than prev…
Spontaneous polarization of composite fermions in the Landau level of graphene
Ajit C. Balram, Csaba Tőke, A. Wójs +1
Motivated by recent experiments that reveal expansive fractional quantum Hall states in the graphene Landau level and suggest a nontrivial role of the spin degree of freedom…
Luttinger theorem for the strongly correlated Fermi liquid of composite fermions
Ajit C. Balram, Csaba Tőke, J. K. Jain
While an ordinary Fermi sea is perturbatively robust to interactions, the paradigmatic composite-fermion (CF) Fermi sea arises as a non-perturbative consequence of emergent gauge f…
Phase Diagram of Fractional Quantum Hall Effect of Composite Fermions in Multi-Component Systems
Ajit C. Balram, Csaba Tőke, A. Wójs +1
While the integer quantum Hall effect of composite fermions manifests as the prominent fractional quantum Hall effect (FQHE) of electrons, the FQHE of composite fermions produces f…
Multi-component fractional quantum Hall states in graphene: SU(4) versus SU(2)
Csaba Toke, Jainendra K. Jain
Because of the spin and Dirac-valley degrees of freedom, graphene allows the observation of one-, two- or four-component fractional quantum Hall effect in different parameter regio…
Intra-Landau level magnetoexcitons and the transition between quantum Hall states in undoped bilayer graphene
Csaba Toke, Vladimir I. Fal'ko
We study the collective modes of the quantum Hall states in undoped bilayer graphene in a strong perpendicular magnetic and electric field. Both for the well-known ferromagnetic st…