Abstract
The anomalous Nernst effect (ANE) in disordered Fe0.5(PtxPd1-x)0.5 alloy films is investigated at room temperature. The spin orbit coupling (SOC) strength is continuously tuned by changing the composition of Pt and Pd in Fe0.5(PtxPd1-x)0.5 alloy films. It was found that the ANE voltage VANE increases with the increase of Pt composition. Meanwhile, the νN factor, which indirectly represents the anomalous Nernst efficiency, also increases with raising the composition of Pt. The enhancement of VANE and νN at larger x can be attributed to the increasing of SOC strength, which mainly comes from heavy Pt atoms. The present results will facilitate the theoretical studies of ANE and provide means of manipulating ANE for technological application.
Highlights
With higher degree of integration for the electronic devices, it is very struggling to further miniaturize the devices due to the local Joule heat
The anomalous Nernst effect (ANE) was measured by a custom-made thermal-electrical transport measurement system
The present results show the advantage of ANE methods, and are believed to be helpful to address the effect of spin orbit coupling (SOC) on ANE in soft magnetic materials
Summary
With higher degree of integration for the electronic devices, it is very struggling to further miniaturize the devices due to the local Joule heat. The proper absorption and utilization of waste heat become the key points to develop high-efficiency and low-power consumption information technology. Spincaloritronics, one of the most important branches of spintronics, attracts intensive research interest. Spin-caloritronics focuses on the interaction among charge current, heat flow as well as spin current.. Spin-caloritronics focuses on the interaction among charge current, heat flow as well as spin current.4 It provides an effective way in recycling the waste heat in spintronics devices. Many related phenomena such as spin Seebeck effect, thermal spin-transfer torque, spin Nernst effect have emerged
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