Quantum transport thermometry for electrons in graphene

Details Quantum transport thermometry for electrons in graphene Quantum transport thermometry for electrons in graphene

2008-08-23

arxiv.org/abs/0808.3211v3

Phys. Rev. Lett. 102, 066801 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures; final version, as published

Scientific paper

10.1103/PhysRevLett.102.066801

We propose a method of measuring the electron temperature $T_e$ in mesoscopic conductors and demonstrate experimentally its applicability to micron-size graphene devices in the linear-response regime ($T_e\approx T$, the bath temperature). The method can be {especially useful} in case of overheating, $T_e>T$. 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 $T_e$ extracted from the correlation function is insensitive to these details.

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