Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 08/2011 |
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<mark>Journal</mark> | Solid State Communications |
Issue number | 16 |
Volume | 151 |
Number of pages | 6 |
Pages (from-to) | 1088-1093 |
Publication Status | Published |
<mark>Original language</mark> | English |
We review the effect of uniaxial strain on the low-energy electronic dispersion and Landau level structure of bilayer graphene. Based on the tight-binding approach, we derive a strain-induced term in the low-energy Hamiltonian and show how strain affects the low-energy electronic band structure. Depending on the magnitude and direction of applied strain, we identify three regimes of qualitatively different electronic dispersions. We also show that in a weak magnetic field, sufficient strain results in the filling factor v = +/-4 being the most stable in the quantum Hall effect measurement, instead of v = +/-8 in unperturbed bilayer at a weak magnetic field. To mention, in one of the strain regimes, the activation gap at v = +/-4 is, down to very low fields, weakly dependent on the strength of the magnetic field.