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

doi:10.1103/PhysRevLett.102.066801

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

^*Corresponding author for this work

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Abstract

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.

Original language	English
Article number	066801
Journal	Physical Review Letters
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.102.066801
Publication status	Published - 9 Feb 2009

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National Graphene Institute

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author = "K. Kechedzhi and Horsell, {D. W.} and Tikhonenko, {F. V.} and Savchenko, {A. K.} and Gorbachev, {R. V.} and Lerner, {I. V.} and Fal'ko, {V. I.}",

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AU - Kechedzhi, K.

AU - Horsell, D. W.

AU - Tikhonenko, F. V.

AU - Savchenko, A. K.

AU - Gorbachev, R. V.

AU - Lerner, I. V.

AU - Fal'ko, V. I.

PY - 2009/2/9

Y1 - 2009/2/9

N2 - 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.

AB - 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.

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Quantum transport thermometry for electrons in graphene

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