Transport properties of the electron gas in ZnO/MgZnO heterostructures

Gold, A.
June 2010
Applied Physics Letters;6/14/2010, Vol. 96 Issue 24, p242111
Academic Journal
We analyze experimental results for the mobility of the two-dimensional electron gas as realized in ZnO/MgZnO heterostructures. For zero temperature we calculate the mobility as function of the electron density for charged-impurity and for interface-roughness scattering. Multiple scattering effects, leading to a metal-insulator transition, are taken into account. The results of our calculation are in good agreement with experimental results. The numbers obtained for the parameters of interface-roughness scattering and charged-impurity scattering are reasonable. We argue that the electron gas in this heterostructure might be spin-polarized.


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