@article {9947, title = {Theoretical evidence of the Berry-phase mechanism in anomalous Hall transport: First-principles studies of Cu Cr2 Se4-x Brx}, journal = {Physical Review B - Condensed Matter and Materials Physics}, year = {2007}, doi = {10.1103/PhysRevB.75.020401}, author = {Yugui Yao and Yongcheng Liang and Di Xiao and Qian Niu and Shun-Qing Shen and X. Dai and Zhong Fang} }