Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/270579
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invite to open peer review
Title

Beating Carnot efficiency with periodically driven chiral conductors

AuthorsRyu, Sungguen CSIC ORCID; López, Rosa CSIC ORCID ; Serra, Llorenç CSIC ORCID ; Sánchez, David CSIC ORCID
Issue Date6-May-2022
PublisherSpringer Nature
CitationNature Communications 13: 2512 (2022)
AbstractClassically, the power generated by an ideal thermal machine cannot be larger than the Carnot limit. This profound result is rooted in the second law of thermodynamics. A hot question is whether this bound is still valid for microengines operating far from equilibrium. Here, we demonstrate that a quantum chiral conductor driven by AC voltage can indeed work with efficiencies much larger than the Carnot bound. The system also extracts work from common temperature baths, violating Kelvin-Planck statement. Nonetheless, with the proper definition, entropy production is always positive and the second law is preserved. The crucial ingredients to obtain efficiencies beyond the Carnot limit are: i) irreversible entropy production by the photoassisted excitation processes due to the AC field and ii) absence of power injection thanks to chirality. Our results are relevant in view of recent developments that use small conductors to test the fundamental limits of thermodynamic engines.
Publisher version (URL)https://doi.org/10.1038/s41467-022-30039-7
URIhttp://hdl.handle.net/10261/270579
DOI10.1038/s41467-022-30039-7
E-ISSN2041-1723
ReferencesRyu, Sungguen; López, Rosa; Serra, Llorenç; Sánchez, David; 2021; Beating Carnot efficiency with periodically driven chiral conductors; arXiv; https://doi.org/10.48550/arXiv.2104.11149
Appears in Collections:(IFISC) Artículos




Files in This Item:
File Description SizeFormat
Beating_Carnot_efficiency.pdf749,47 kBAdobe PDFThumbnail
View/Open
Show full item record

CORE Recommender

SCOPUSTM   
Citations

7
checked on Apr 20, 2024

WEB OF SCIENCETM
Citations

3
checked on Feb 27, 2024

Page view(s)

55
checked on Apr 23, 2024

Download(s)

44
checked on Apr 23, 2024

Google ScholarTM

Check

Altmetric

Altmetric


This item is licensed under a Creative Commons License Creative Commons