A scaling relation of anomalous Hall effect in ferromagnetic semiconductors and metals
arXiv:0706.2924 · doi:10.1143/JJAP.46.642
Abstract
A scaling relation of the anomalous Hall effect recently found in a ferromagnetic semiconductor (Ti,Co)O_2_ is compared with those of various ferromagnetic semiconductors and metals. Many of these compounds with relatively low conductivity sigma_xx_ < 10^4 ohm^-1 cm^-1 are also found to exhibit similar relation: anomalous Hall conductivity sigma_AH_ approximately scales as sigma_AH_ proportional to sigma_xx_^1.6, that is coincident with a recent theory. This relation is valid over five decades of sigma_xx_ irrespective of metallic or hopping conduction.
10 pages, 1 table, 1 figure. To be published in Jpn. J. Appl. Phys. 46, issue 26 (2007)