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Non-Local Hall Resistance in FePt / Au Multi-Terminal Devices

Published online by Cambridge University Press:  02 August 2012

Koki Takanashi ,
Shun Shibata ,
Isamu Sugai  and
Takeshi Seki
Koki Takanashi
Affiliation:
Insititute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Shun Shibata
Affiliation:
Insititute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Isamu Sugai
Affiliation:
Insititute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Takeshi Seki
Affiliation:
Insititute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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Abstract

In order to understand the electric current distribution in a non-local geometry, the geometrical dependence of non-local Hall resistance was investigated for lateral devices consisting of an FePt perpendicular spin polarizer and a Au Hall cross. The finite element simulation was also carried out to calculate the electric potential in the devices. The experiment and the simulation indicated that non-local Hall resistance included the contribution of anomalous Hall effect (AHE) in the FePt perpendicular spin polarizer. The resistance change due to AHE in FePt became remarkable for devices with a wide electrode. Taking into account the contribution of AHE, the spin Hall angle was estimated to be 0.05 for the device with a narrow Au electrode.

Keywords

spintronicmagnetic propertiesHall effect
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1458: Symposium LL – New Trends and Developments in Nanomagnetism , 2012 , mrss12-1458-ll13-01
Copyright
Copyright © Materials Research Society 2012

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References

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