Comparison of the magneto-Peltier and magneto-Seebeck effects in magnetic tunnel junctions

Abstract

Magnetic tunnel junctions (MTJs) are the building blocks of the magnetic random access memory technology due to their large contrast of the electrical resistances between the two different magnetic configurations. This work is focused on their configuration-dependent thermal properties. For the first time, the magneto-Peltier effect, a reciprocal effect of the magneto-Seebeck effect in magnetic tunnel junctions, is detected experimentally. These results open up the possibility of a magnetically controllable cooling mechanism in MTJs, which can be potentially applied in novel magnetic logic devices.