Shot Noise of a Temperature-Biased Tunnel Junction
| Autor: | Samuel Larocque, Edouard Pinsolle, Christian Lupien, Bertrand Reulet |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Bandwidth (signal processing) Shot noise FOS: Physical sciences General Physics and Astronomy 01 natural sciences Current noise Tunnel junction Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Electrode Electron temperature Zero temperature 010306 general physics Voltage |
| Zdroj: | Physical Review Letters. 125 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.125.106801 |
| Popis: | We report the measurement of the current noise of a tunnel junction driven out-of-equilibrium by a temperature and/or voltage difference, i.e. the charge noise of heat and/or electrical current. This is achieved by a careful control of electron temperature below 1 K at the nanoscale, and a sensitive measurement of noise with wide bandwidth, from 0.1 to 1 GHz. An excellent agreement between experiment and theory with no fitting parameter is obtained. In particular, we find that the current noise of the junction of resistance R when one electrode is at temperature T and the other one at zero temperature is given by S = 2 ln2 kB T /R. 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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