2019年10月1日

# Thermal Spin-Valve Effect in Magnetic Multi-layered Nanowires

Journal of Superconductivity and Novel Magnetism
• Nagarjuna Asam
• ,
• Kazuto Yamanoi
• ,
• Kohei Ohnishi
• ,
• Takashi Kimura

32
10

3109

3113

DOI
10.1007/s10948-019-5016-5

SPRINGER

© 2019, Springer Science+Business Media, LLC, part of Springer Nature. We have investigated the influence of the spin-dependent scattering on the heat transports in NiFe/Cu/NiFe and Co/Cu/Co tri-layered nanowires. The thermal conductivity and its spin dependence for the tri-layered wires have been evaluated by using an integrated nano-sized thermo couple. We find that the thermal spin-valve effect is always approximately 8 times larger than the electrical spin-valve effect, namely giant magnetoresistance effect. The numerical simulation with the experimental results enable us to estimate the thermal conductivity for the tri-layered wire and its spin dependence. Surprisingly, the spin dependence of the thermal conductivity for the Co/Cu/Co wire is as high as 8%, which is much larger than the electrical one. This indicates a high potential application of the thermal spin-valve effect.

リンク情報
DOI
https://doi.org/10.1007/s10948-019-5016-5
Web of Science