Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine
We study the performance of an endoreversible magnetic Otto cycle with a working substance composed of a single quantum dot described using the well-known Fock–Darwin model. We find that tuning the intensity of the parabolic trap (geometrical confinement) impacts the proposed cycle’s performance, qu...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/25/3/518 |
| _version_ | 1827749889752170496 |
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| author | Francisco J. Peña Nathan M. Myers Daniel Órdenes Francisco Albarrán-Arriagada Patricio Vargas |
| author_facet | Francisco J. Peña Nathan M. Myers Daniel Órdenes Francisco Albarrán-Arriagada Patricio Vargas |
| author_sort | Francisco J. Peña |
| collection | DOAJ |
| description | We study the performance of an endoreversible magnetic Otto cycle with a working substance composed of a single quantum dot described using the well-known Fock–Darwin model. We find that tuning the intensity of the parabolic trap (geometrical confinement) impacts the proposed cycle’s performance, quantified by the power, work, efficiency, and parameter region where the cycle operates as an engine. We demonstrate that a parameter region exists where the efficiency at maximum output power exceeds the Curzon–Ahlborn efficiency, the efficiency at maximum power achieved by a classical working substance. |
| first_indexed | 2024-03-11T06:34:53Z |
| format | Article |
| id | doaj.art-59191929125f456884f074e443620ea9 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T06:34:53Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-59191929125f456884f074e443620ea92023-11-17T10:57:19ZengMDPI AGEntropy1099-43002023-03-0125351810.3390/e25030518Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot EngineFrancisco J. Peña0Nathan M. Myers1Daniel Órdenes2Francisco Albarrán-Arriagada3Patricio Vargas4Departamento de Física, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso 11520, ChileDepartment of Physics, Virginia Tech, Blacksburg, VA 24061, USADepartamento de Física, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso 11520, ChileDepartamento de Física, CEDENNA, Universidad de Santiago de Chile (USACH), Avenida Víctor Jara 3493, Estación Central 9170124, ChileDepartamento de Física, CEDENNA, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso 11520, ChileWe study the performance of an endoreversible magnetic Otto cycle with a working substance composed of a single quantum dot described using the well-known Fock–Darwin model. We find that tuning the intensity of the parabolic trap (geometrical confinement) impacts the proposed cycle’s performance, quantified by the power, work, efficiency, and parameter region where the cycle operates as an engine. We demonstrate that a parameter region exists where the efficiency at maximum output power exceeds the Curzon–Ahlborn efficiency, the efficiency at maximum power achieved by a classical working substance.https://www.mdpi.com/1099-4300/25/3/518magnetic cyclequantum Otto cyclequantum thermodynamics |
| spellingShingle | Francisco J. Peña Nathan M. Myers Daniel Órdenes Francisco Albarrán-Arriagada Patricio Vargas Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine Entropy magnetic cycle quantum Otto cycle quantum thermodynamics |
| title | Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine |
| title_full | Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine |
| title_fullStr | Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine |
| title_full_unstemmed | Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine |
| title_short | Enhanced Efficiency at Maximum Power in a Fock–Darwin Model Quantum Dot Engine |
| title_sort | enhanced efficiency at maximum power in a fock darwin model quantum dot engine |
| topic | magnetic cycle quantum Otto cycle quantum thermodynamics |
| url | https://www.mdpi.com/1099-4300/25/3/518 |
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