Quantum dot as thermal rectifier

R. Scheibner, M. Koenig, D. Reuter, A. D. Wieck, H. Buhmann, L. W. Molenkamp

Published 2007-03-20Version 1

We report the observation of thermal rectification in a semiconductor quantum dot, as inferred from the asymmetric line shape of the thermopower oscillations. The asymmetry is observed at high in-plane magnetic fields and caused by the presence of a high orbital momentum state in the dot.