Electrical transport properties of Ti-doped Fe2O3(0001) epitaxial filmsRemoveB. Zhao, T. C. Kaspar, T. C. Droubay, J. McCloy, M. E. Bowden, V. Shutthanandan, S. M. Heald, and S. A. ChambersPhys. Rev. B 84, 245325 (2011)