TY - JOUR
T1 - Theoretical evidence of the Berry-phase mechanism in anomalous Hall transport
T2 - First-principles studies of Cu Cr2 Se4-x Brx
AU - Yao, Yugui
AU - Liang, Yongcheng
AU - Xiao, Di
AU - Niu, Qian
AU - Shen, Shun Qing
AU - Dai, X.
AU - Fang, Zhong
PY - 2007
Y1 - 2007
N2 - To justify the origin of the anomalous Hall effect (AHE), it is highly desirable to have the system parameters tuned continuously. By quantitative calculations, we show that the doping-dependent sign reversal in Cu Cr2 Se4-x Brx, observed but not understood, is nothing but direct evidence for the Berry-phase mechanism of the AHE. Systematic calculations explain well the experiment data for the whole doping range where the impurity scattering rate is changed by several orders with Br substitution. Further sign change is also predicted, which may be tested by future experiments.
AB - To justify the origin of the anomalous Hall effect (AHE), it is highly desirable to have the system parameters tuned continuously. By quantitative calculations, we show that the doping-dependent sign reversal in Cu Cr2 Se4-x Brx, observed but not understood, is nothing but direct evidence for the Berry-phase mechanism of the AHE. Systematic calculations explain well the experiment data for the whole doping range where the impurity scattering rate is changed by several orders with Br substitution. Further sign change is also predicted, which may be tested by future experiments.
UR - http://www.scopus.com/inward/record.url?scp=33846342189&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.75.020401
DO - 10.1103/PhysRevB.75.020401
M3 - Article
AN - SCOPUS:33846342189
SN - 1098-0121
VL - 75
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 020401
ER -