We report an enhancement of the anomalous Nernst effect (ANE) in Ni/Pt (001) epitaxial superlattices. The transport and magnetothermoelectric properties were investigated for the Ni/Pt superlattices with various Ni layer thicknesses ($t$). The anomalous Nernst coefficient was increased up to more than $1\mu \mathrm{V}{\mathrm{K}}^{-1}$ for $2.0\mathrm{nm}\le t\le 4.0\mathrm{nm}$, which was the remarkable enhancement compared to the bulk Ni. It has been found that the large transverse thermoelectric conductivity $\left({\alpha }_{xy}\right)$, reaching ${\alpha }_{xy}=4.8\mathrm{A}{\mathrm{K}}^{-1}{\mathrm{m}}^{-1}$ for $t=4.0\mathrm{nm}$, plays a prime role for the enhanced ANE of the Ni/Pt (001) superlattices.

Close

PrevNext

View figure in article

• Anomalous Hall effect
• Nernst effect
• Spin caloritronics
• Magnetic multilayers
• Density functional theory
• Sputtering