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Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration

Olli-Pentti Saira·Matthias Meschke·Francesco Giazotto·Alexander M. Savin·Mikko Mottonen·Jukka P. Pekola
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Abstract

We present experiments on a superconductor-normal metal electron refrigerator in a regime where single-electron charging effects are significant. The system functions as a heat transistor, i.e., the heat flux out from the normal metal island can be controlled with a gate voltage. A theoretical model developed within the framework of single-electron tunneling provides a full quantitative agreement with the experiment. This work serves as the first experimental observation of Coulombic control of heat transfer and, in particular, of refrigeration in a mesoscopic system.

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Olli-Pentti Saira, Matthias Meschke, Francesco Giazotto, Alexander M. Savin, Mikko Mottonen, Jukka P. Pekola. 2007-02-15. Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration. https://doi.org/10.1103/physrevlett.99.027203

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