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. 2014 Dec 5;5:5742. doi: 10.1038/ncomms6742

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(a) Resistance of a small-angle folded sample (S3*) as function of magnetic field and backgate voltage. The dotted lines indicate main (left) and satellite fan (right), the black horizontal lines mark Landau-fan intersections. (b) Resistance over the inverse positive and negative magnetic field of polarity. The additional features can be seen for both polarities. Horizontal lines mark intersections: The satellite fan intersects Landau levels of the main one at every second line (either dashed or solid only), indicating doubled degeneracy. (c) In the derivative of the resistance, a third fan can be identified as indicated by the arrows. The dotted vertical line marks the position of the second one.