Non-Linear Thermovoltage in a Single-Electron Transistor
We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the linear and non-linear regimes. Using a model which accounts for co-tunneling, we find excellent agreement with the experimental data with no free parameters even when the tempe...
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| Published in | arXiv.org |
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| Main Authors | , , , , , , , |
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| Language | English |
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Cornell University Library, arXiv.org
16.12.2018
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| Abstract | We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the linear and non-linear regimes. Using a model which accounts for co-tunneling, we find excellent agreement with the experimental data with no free parameters even when the temperature difference is larger than the average temperature (far-from-linear regime). This allows us to confirm the sensitivity of the thermovoltage on co-tunneling and to find that in the non-linear regime the temperature of the metallic island is a crucial parameter. Surprisingly, the metallic island tends to overheat even at zero net charge current, resulting in a reduction of the thermovoltage. |
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| AbstractList | We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the linear and non-linear regimes. Using a model which accounts for co-tunneling, we find excellent agreement with the experimental data with no free parameters even when the temperature difference is larger than the average temperature (far-from-linear regime). This allows us to confirm the sensitivity of the thermovoltage on co-tunneling and to find that in the non-linear regime the temperature of the metallic island is a crucial parameter. Surprisingly, the metallic island tends to overheat even at zero net charge current, resulting in a reduction of the thermovoltage. Phys. Rev. B 99, 165405 (2019) We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the linear and non-linear regimes. Using a model which accounts for co-tunneling, we find excellent agreement with the experimental data with no free parameters even when the temperature difference is larger than the average temperature (far-from-linear regime). This allows us to confirm the sensitivity of the thermovoltage on co-tunneling and to find that in the non-linear regime the temperature of the metallic island is a crucial parameter. Surprisingly, the metallic island tends to overheat even at zero net charge current, resulting in a reduction of the thermovoltage. |
| Author | Peltonen, Joonas T Bhandari, Bibek Erdman, Paolo A Fazio, Rosario Pekola, Jukka P Courtois, Hervé Taddei, Fabio Dutta, Bivas |
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| BackLink | https://doi.org/10.1103/PhysRevB.99.165405$$DView published paper (Access to full text may be restricted) https://doi.org/10.48550/arXiv.1812.06514$$DView paper in arXiv |
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| DOI | 10.48550/arxiv.1812.06514 |
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| Snippet | We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the linear and non-linear regimes.... Phys. Rev. B 99, 165405 (2019) We perform direct thermovoltage measurements in a single-electron transistor, using on-chip local thermometers, both in the... |
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| SubjectTerms | Parameters Physics - Mesoscale and Nanoscale Physics Single-electron transistors Temperature gradients Thermometers Transistors |
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| Title | Non-Linear Thermovoltage in a Single-Electron Transistor |
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