Locally enhanced conductivity due to tetragonal domain structure in LaAlO3/SrTiO3 heterointerfaces

B. Kalisky, E. M. Spanton, H. Noad, J. R. Kirtley, K. C. Nowack, C. Bell, H. K. Sato, Y. Xie, Y. Hikita, C. Woltmann, G. Pfanzelt, R. Jany, H. Y. Hwang, J. Mannhart and K. A. Moler