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Phys Rev Lett. 2009 Jul 31;103(5):057204. Epub 2009 Jul 31.

Control of the anomalous hall effect by doping in Eu(1-x)La(x)TiO(3) thin films.

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Cross-correlated Materials Research Group (CMRG), Advanced Science Institute, RIKEN, Wako 351-0198, Japan.


The anomalous Hall effect (AHE) has been studied for epitaxial films of Eu(1-x)La(x)TiO(3), in which band filling can be controlled by doping x without undesired changes in magnetization. This system has a simple band structure near the conduction band bottom, which makes it possible to design the AHE. As expected, the anomalous Hall resistivity shows a nonmonotonic change as a function of the carrier density accompanied with the sign reversal around n=2.4 x 10(20) cm(-3). This opens a possibility to control the AHE by devising the material, structure, and doping level.

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