Sequential and co-tunneling behavior in the temperature-dependent thermopower of few-electron quantum dots
Mesoscale and Nanoscale Physics
2015-06-25 v1 Materials Science
Abstract
We have studied the temperature dependent thermopower of gate-defined, lateral quantum dots in the Coulomb blockade regime using an electron heating technique. The line shape of the thermopower oscillations depends strongly on the contributing tunneling processes. Between 1.5 K and 40 mK a crossover from a pure sawtooth- to an intermitted sawtooth-like line shape is observed. The latter is attributed to the increasing dominance of cotunneling processes in the Coulomb blockade regime at low temperatures.
Keywords
Cite
@article{arxiv.cond-mat/0608193,
title = {Sequential and co-tunneling behavior in the temperature-dependent thermopower of few-electron quantum dots},
author = {R. Scheibner and E. G. Novik and T. Borzenko and M. Koenig and D. Reuter and A. D. Wieck and H. Buhmann and L. W. Molenkamp},
journal= {arXiv preprint arXiv:cond-mat/0608193},
year = {2015}
}
Comments
4 pages, 4 figures, submitted to Phys. Rev. B