We propose a method of measuring the electron temperature Te in mesoscopic conductors and demonstrate experimentally its applicability to micron-size graphene devices in the linear-response regime (Te≈T, the bath temperature). The method can be {especially useful} in case of overheating, Te>T. It is based on analysis of the correlation function of mesoscopic conductance fluctuations. Although the fluctuation amplitude strongly depends on the details of electron scattering in graphene, we show that Te extracted from the correlation function is insensitive to these details.
@article{arxiv.0808.3211,
title = {Quantum transport thermometry for electrons in graphene},
author = {K. Kechedzhi and D. W. Horsell and F. V. Tikhonenko and A. K. Savchenko and R. V. Gorbachev and I. V. Lerner and V. I. Fal'ko},
journal= {arXiv preprint arXiv:0808.3211},
year = {2009}
}