Table 1

Fitting results and mainly transport mechanism of three samples
Sample 1 Sample 2 Sample 3
Applied model Equation 2 Equation 2 Linear fit
N 2 4 -
G0 (S · cm−1) 219.1 31.2 -
C1 (S · cm−1 · K−1.33) 3.1 × 10−2 8.2 × 10−3 -
C2 (S · cm−1 · K−2.5) - 4.0 × 10−4 -
C3 (S · cm−1 · K−3.6) - 6.1 × 10−8 -
∆ (K) 104.7 2,832.4 -
E (meV) 1.64 44.35 -
Straight slope (μΩ · cm/log(K)) - - −849.1
Mainly transport Tunneling Hopping Metallic paths

The temperature dependence of conductivity of samples B and C are fitted by Equation 2, as shown in Figure 5b,d. The relationship between resistivity and ln T for sample A is fitted linear in Figure 5f.

Quan et al.

Quan et al. Nanoscale Research Letters 2014 9:6   doi:10.1186/1556-276X-9-6

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