Resolution:
standard / ## Figure 2.
The Local Fermi energy E and the corresponding 2D carrier density n_{2D }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 |