Magneto-thermal transport indicating enhanced Nernst response in FeCo/IrMn exchange coupled stacks

Martini M, Reichlova H, Lee Y, Dusikova D, Zemen J, Nielsch K, Thomas A (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 121

Article Number: 212405

Journal Issue: 21

DOI: 10.1063/5.0113485

Abstract

We present an analysis of magneto-thermal transport data in IrMn/FeCo bilayers based on the Mott relation and report an enhancement of the Nernst response in the vicinity of the blocking temperature. We measure all four transport coefficients of the longitudinal resistivity, anomalous Hall resistivity, Seebeck effect, and anomalous Nernst effect, and we show a deviation arising around the blocking temperature between the measured Nernst coefficient and the one calculated using the Mott rule. We attribute this discrepancy to spin fluctuations at the antiferromagnet/ferromagnet interface near the blocking temperature. The latter is estimated by magnetometry and magneto-transport measurements.

Involved external institutions

Academy of Sciences of the Czech Republic (ASCR) / Akademie věd České republiky (AVČR) CZ Czech Republic (CZ) Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE) Czech Technical University in Prague / České vysoké učení technické v Praze CZ Czech Republic (CZ)

How to cite

APA:

Martini, M., Reichlova, H., Lee, Y., Dusikova, D., Zemen, J., Nielsch, K., & Thomas, A. (2022). Magneto-thermal transport indicating enhanced Nernst response in FeCo/IrMn exchange coupled stacks. Applied Physics Letters, 121(21). https://doi.org/10.1063/5.0113485

MLA:

Martini, Mickey, et al. "Magneto-thermal transport indicating enhanced Nernst response in FeCo/IrMn exchange coupled stacks." Applied Physics Letters 121.21 (2022).

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