Presentation Information
[19p-P06-20]Observation of Spin Seebeck Effect in YIG/Rh
〇(B)Shuto Sahara1, Yuichiro Kurokawa1, Hiromi Yuasa1 (1.Kyushu Univ.)
Keywords:
spin seebeck effect
Spintronic devices require heavy metals with large spin-orbit interactions and low resistivity, and Pt is a typical material. In order to expand the selection of materials, we focus on the properties of Rh because Rh has the same fcc crystal structure as Pt and has half the electrical resistivity of Pt. In this study, we investigate spin Seebeck voltage of YIG/Rh.
The thermoelectromotive force ΔV/ΔT originated from spin Seebeck voltages of the YIG/Rh was about half ΔV/ΔT of YIG/Pt, which corresponds to the difference in the resistivity between Pt and Rh. This means that there is no difference between Pt and Rh in charge current obtained by the inverse spin-Hall effect. Therefore, we were able to increase the choice of materials depending on whether we focused on ΔV or ΔI.
The thermoelectromotive force ΔV/ΔT originated from spin Seebeck voltages of the YIG/Rh was about half ΔV/ΔT of YIG/Pt, which corresponds to the difference in the resistivity between Pt and Rh. This means that there is no difference between Pt and Rh in charge current obtained by the inverse spin-Hall effect. Therefore, we were able to increase the choice of materials depending on whether we focused on ΔV or ΔI.
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