Figure 2.

The Local Fermi energy E and the corresponding 2D carrier density n2D for different Landau levels. (a) Sample A and (b) sample B at T = 0.3 K. Circle, 3↓ and 1↓; square, 3↑ and 1↑; star, 2↓; triangle, 2↑.

Huang et al. Nanoscale Research Letters 2013 8:138   doi:10.1186/1556-276X-8-138
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