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Journal articles
Extended Nyquist formula for a resistance subject to a heat flow
Abstract : The Nyquist formula quantifies the thermal noise driven fluctuations of voltage across a resistance in equilibrium. We deal here with the case of a resistance driven out of equilibrium by putting it in contact with two thermostats at different temperatures. We reach a non-equilibrium steady state where a heat flux is flowing through the resistance. Our measurements demonstrate anyway that a simple extension of the Nyquist formula to the non uniform temperature field describes with an excellent precision the thermal noise. For a metallic ohmic material, the fluctuations are actually equivalent to those of a resistance in equilibrium with a single thermostat at the mean temperature between the hot and cold sources.
https://hal-ens-lyon.archives-ouvertes.fr/ensl-02148352
Contributor : Ludovic Bellon <>
Submitted on : Tuesday, November 5, 2019 - 11:01:41 AM
Last modification on : Monday, December 16, 2019 - 4:02:14 PM
Contributor : Ludovic Bellon <>
Submitted on : Tuesday, November 5, 2019 - 11:01:41 AM
Last modification on : Monday, December 16, 2019 - 4:02:14 PM
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