Kavli Affiliate: Herre S. J. Van Der Zant
| First 5 Authors: Serhii Volosheniuk, Serhii Volosheniuk, , ,
| Summary:
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.
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