Magneto-Seebeck effect in magnetic tunnel junctions with perpendicular anisotropy
Published in AIP Advances, 2017
This paper analyzes the tunnel magneto-Seebeck effect in magnetic tunnel junctions with perpendicular anisotropy (p-MTJs) under various measurement temperatures. The authors achieve a large tunnel magneto-Seebeck (TMS) ratio up to -838.8% for p-MTJs at 200 K, with Seebeck coefficients of 6.7 mV/K and 62.9 mV/K in parallel and antiparallel states, respectively. The temperature dependence of the tunnel magneto-Seebeck is attributed to the contributing transmission function and electron states at the interface between the CoFeB electrode and MgO barrier. The study contributes to the field of spin caloritronics, which combines spin, charge, and heat current. Link