Non-local hall resistance in FePt/Au multi-terminal devices

Koki Takanashi; Shun Shibata; Isamu Sugai; Takeshi Seki

doi:10.1557/opl.2012.1350

Non-local hall resistance in FePt/Au multi-terminal devices

Koki Takanashi, Shun Shibata, Isamu Sugai, Takeshi Seki

IMR - Materials Development Division

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

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.

Original language	English
Title of host publication	New Trends and Developments in Nanomagnetism
Pages	12-18
Number of pages	7
DOIs	https://doi.org/10.1557/opl.2012.1350
Publication status	Published - 2012
Event	2012 MRS Spring Meeting - San Francisco, CA, United States Duration: 2012 Apr 9 → 2012 Apr 13

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1458
ISSN (Print)	0272-9172

Conference

Conference	2012 MRS Spring Meeting
Country/Territory	United States
City	San Francisco, CA
Period	12/4/9 → 12/4/13

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10.1557/opl.2012.1350

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title = "Non-local hall resistance in FePt/Au multi-terminal devices",

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.",

author = "Koki Takanashi and Shun Shibata and Isamu Sugai and Takeshi Seki",

year = "2012",

doi = "10.1557/opl.2012.1350",

language = "English",

isbn = "9781627482547",

series = "Materials Research Society Symposium Proceedings",

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T1 - Non-local hall resistance in FePt/Au multi-terminal devices

AU - Takanashi, Koki

AU - Shibata, Shun

AU - Sugai, Isamu

AU - Seki, Takeshi

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

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M3 - Conference contribution

AN - SCOPUS:84879530812

SN - 9781627482547

T3 - Materials Research Society Symposium Proceedings

SP - 12

EP - 18

BT - New Trends and Developments in Nanomagnetism

T2 - 2012 MRS Spring Meeting

Y2 - 9 April 2012 through 13 April 2012

ER -

Non-local hall resistance in FePt/Au multi-terminal devices

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