Sergey Slizovskiy, Joseph Betouras
We compute the magnetization of graphene, taking into account a possible mass gap. We show that the magnetization shows non-linear behaviour, reflecting the strong non-analyticity of the two-dimensional effective action of Dirac electrons. The necessary values of the magnetic field to observe this non-linearity vary from a few Teslas for clean samples to few tens of Teslas for lower-quality samples. In the light of these calculations, we discuss the effects of disorder and interactions as well as the experimental conditions under which the predictions can be observed.
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http://arxiv.org/abs/1203.5044
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