Electron Mobility in ZnMgO/ZnO Heterostructures in the Bloch--Grüneisen Regime

概要

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The temperature dependence of the electron mobility in ZnMgO/ZnO heterostructures in the Bloch--Grüneisen regime is studied and many-body effects are taken into account. For sufficiently low temperatures, the mobility limited by acoustic scattering follows a stronger, \mu\sim T^{-\alpha} (\alpha=8.5 for the deformation-potential scattering, \alpha=6.5 for the piezoelectric scattering), temperature dependence, which is significantly different from the traditional \mu\sim T^{-1} law. Many-body effects play an important role in the electron transport. The theoretical calculations are able to explain recently published experimental data.
2013-12-25