A Single-Molecule Quantum Heat Engine
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912551383597056 |
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| author | Volosheniuk, Serhii Conte, Riccardo Pyurbeeva, Eugenia Baum, Thomas Vilas-Varela, Manuel Fernández, Saleta Peña, Diego van der Zant, Herre S. J. Gehring, Pascal |
| author_facet | Volosheniuk, Serhii Conte, Riccardo Pyurbeeva, Eugenia Baum, Thomas Vilas-Varela, Manuel Fernández, Saleta Peña, Diego van der Zant, Herre S. J. Gehring, Pascal |
| contents | Particle-exchange heat engines operate without moving parts or time-dependent driving, relying solely on static energy-selective transport. Here, we realize a particle-exchange quantum heat engine based on a single diradical molecule, only a few nanometers in size. We experimentally investigate its operation at low temperatures and demonstrate that both the power output and efficiency are significantly enhanced by Kondo correlations, reaching up to 53 % of the Curzon-Ahlborn limit. These results establish molecular-scale particle-exchange engines as promising candidates for low-temperature applications where extreme miniaturization and energy efficiency are paramount. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_17036 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Single-Molecule Quantum Heat Engine Volosheniuk, Serhii Conte, Riccardo Pyurbeeva, Eugenia Baum, Thomas Vilas-Varela, Manuel Fernández, Saleta Peña, Diego van der Zant, Herre S. J. Gehring, Pascal Mesoscale and Nanoscale Physics Particle-exchange heat engines operate without moving parts or time-dependent driving, relying solely on static energy-selective transport. Here, we realize a particle-exchange quantum heat engine based on a single diradical molecule, only a few nanometers in size. We experimentally investigate its operation at low temperatures and demonstrate that both the power output and efficiency are significantly enhanced by Kondo correlations, reaching up to 53 % of the Curzon-Ahlborn limit. These results establish molecular-scale particle-exchange engines as promising candidates for low-temperature applications where extreme miniaturization and energy efficiency are paramount. |
| title | A Single-Molecule Quantum Heat Engine |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2508.17036 |