Magnetic Mn-Doped Ge Nanostructures

Figure 14

Magnetotransport measurements for the MnGe nanodot arrays. (a) The temperature-dependent resistivity (ln𝜌 versus 𝑇⁻¹) and the inset displays the plot of ln𝜌 versus 𝑇^−1/4. (b) Temperature-dependent MR under fixed magnetic fields of 5 and 10 Tesla and the inset showing the plot of ln(MR) versus 𝑇^−1/3. (c) Positive MRs at different temperatures and different magnetic fields.

(a)

(b)

(c)