Quantized Anomalous Hall Effect in Magnetic Topological Insulators Rui Yu, 1 Wei Zhang, 1 Hai-Jun Zhang, 1 , 2 Shou-Cheng Zhang, 2 , 3 Xi Dai, 1 ∗ Zhong Fang 1 ∗ 3 Center for Advanced Study, Tsinghua University, Beijing 100084, China (Dated: February 4, 2010) 1 arXiv:1002.0946v1 [cond-mat.mes-hall] 4 Feb 2010 $^{1}$Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China, $^{2}$Department of Physics, McCullough Building, Stanford University Stanford, CA 94305-4045,