@article {10693,
	title = {Origin of insulating behavior of the p-type LaAlO3/SrTiO 3 interface: Polarization-induced asymmetric distribution of oxygen vacancies},
	journal = {Physical Review B - Condensed Matter and Materials Physics},
	year = {2010},
	doi = {10.1103/PhysRevB.82.125412},
	author = {Lixin Zhang and Xiang-Feng Zhou and Hui-Tian Wang and Jing-Jun Xu and Jingbo Li and E.G. Wang and Su-Huai Wei}
}
