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arXiv · 0808.3211

Quantum transport thermometry for electrons in graphene

K. Kechedzhi·D. W. Horsell·F. V. Tikhonenko·A. K. Savchenko·R. V. Gorbachev·I. V. Lerner·V. I. Fal'ko
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Abstract

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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K. Kechedzhi, D. W. Horsell, F. V. Tikhonenko, A. K. Savchenko, R. V. Gorbachev, I. V. Lerner, V. I. Fal'ko. 2009-01-15. Quantum transport thermometry for electrons in graphene. https://doi.org/10.1103/physrevlett.102.066801

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