Spin component in the Nernst–Ettingshausen effect in metals with different band structure
Yu. N. Chiang (Tszyan) and M. O. Dzyuba
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
Kharkiv 61103, Ukraine
Received July 27, 2021, published online December 24, 2021
The spin contribution of the spin -orbit interaction to the Nernst–Ettingshausen effect in nonmagnetic metals with different band structures (Pt and W) under conditions of the coexistence of a nonzero gradient of the spin chemical potential and a temperature gr adient has been studied by direct measurement. It is found the dependence of the manifestation of the different origin spin effects (spin Nernst –Ettingshausen effect is of a thermal diffusion nature and spin Hall effect is of an electrical nature) on the band structure of the metal, which controls the profile of the spin magnetization established at the edges of the sample due to the spin accumulation.
Key words: Nernst–Ettingshausen effect, spin Hall effect, band structure.