We study the thermal transport in magnetic tunnel junctions. Thermal gradients across the tunneling barrier appear around the Fowler-Nordheim tunneling regime, due to the current-induced heat caused by quantum interference. Both thermovoltage and thermal temperature follow a linear response with the applied current, which is an evidence for a thermoelectric effect. By increasing the barrier transparency, the dynamics of thermoelectric properties is observed with the current. Accordingly, a large range of the Seebeck coefficient, 10 - 1000 {\mu}V/K, has been obtained in magnetic tunnel junctions.
@article{arxiv.1308.4483,
title = {Thermal transport due to quantum interference in magnetic tunnel junctions},
author = {J. F. Feng and D. P. Liu and Q. L. Ma and H. X. Wei and X. F. Han},
journal= {arXiv preprint arXiv:1308.4483},
year = {2013}
}