Figure 3.

Logarithm of the Hall carrier density versus inverse temperature. The carrier density is thermally activated with an activation energy of Ea = 108 ± 20 meV (from the slope of the line going through the experimental data at highest measurement temperatures).

Balkan et al. Nanoscale Research Letters 2012 7:574   doi:10.1186/1556-276X-7-574
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