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arXiv · 1210.0166

Possible Broken Inversion and Time-Reversal Symmetry State of Electrons in Bilayer Graphene

Xin-Zhong Yan·C. S. Ting
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Abstract

With the two-band continuum model, we study the broken inversion and time-reversal symmetry state of electrons with finite-range repulsive interactions in bilayer graphene. With the analytical solution to the mean-field Hamiltonian, we obtain the electronic spectra. The ground state is gapped. In the presence of the magnetic field $B$, the energy gap grows with increasing $B$, in excellently agreement with the experimental observation. Such an energy gap behavior originates from the disappearance of a Landau level of $n$ = 0 and 1 states. The present result resolves explicitly the puzzle of the gap dependence of $B$.

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Xin-Zhong Yan, C. S. Ting. 2012-12-18. Possible Broken Inversion and Time-Reversal Symmetry State of Electrons in Bilayer Graphene. https://doi.org/10.1103/physrevb.86.235126

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