Beating Carnot efficiency with periodically driven chiral conductors.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
06 May 2022
06 May 2022
Historique:
received:
27
04
2021
accepted:
28
03
2022
entrez:
6
5
2022
pubmed:
7
5
2022
medline:
7
5
2022
Statut:
epublish
Résumé
Classically, 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.
Identifiants
pubmed: 35523762
doi: 10.1038/s41467-022-30039-7
pii: 10.1038/s41467-022-30039-7
pmc: PMC9076907
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2512Subventions
Organisme : Ministry of Economy and Competitiveness | Agencia Estatal de Investigación (Spanish Agencia Estatal de Investigación)
ID : MAT2017-82639
Organisme : Ministry of Economy and Competitiveness | Agencia Estatal de Investigación (Spanish Agencia Estatal de Investigación)
ID : PID2020-117347GB-I00
Organisme : Ministry of Economy and Competitiveness | Agencia Estatal de Investigación (Spanish Agencia Estatal de Investigación)
ID : MDM2017- 0711
Organisme : National Research Foundation of Korea (NRF)
ID : 2021R1A6A3A03040076
Informations de copyright
© 2022. The Author(s).
Références
Nat Nanotechnol. 2019 Nov;14(11):1019-1023
pubmed: 31686007
Phys Rev Lett. 2021 Feb 26;126(8):080603
pubmed: 33709732
Science. 2003 Feb 7;299(5608):862-4
pubmed: 12511655
Rep Prog Phys. 2018 May;81(5):056503
pubmed: 29355831
Phys Rev Lett. 2014 Feb 21;112(7):076803
pubmed: 24579624
Phys Rev Lett. 2004 Feb 6;92(5):056804
pubmed: 14995329
Nature. 2013 Oct 31;502(7473):659-63
pubmed: 24153178
Phys Rev Lett. 2019 Nov 22;123(21):216801
pubmed: 31809128
Phys Rev B Condens Matter. 1990 Apr 15;41(11):7906-7909
pubmed: 9993100
Entropy (Basel). 2019 Aug 08;21(8):
pubmed: 33267490
Phys Rev Lett. 2014 Apr 18;112(15):150602
pubmed: 24785017
J Phys Chem Lett. 2015 Sep 3;6(17):3477-82
pubmed: 26291720
Phys Rev Lett. 2017 Oct 27;119(17):170602
pubmed: 29219425
Phys Rev Lett. 2016 Jun 17;116(24):240403
pubmed: 27367367
Nature. 2014 Oct 30;514(7524):603-7
pubmed: 25355360
Proc Natl Acad Sci U S A. 2014 Sep 23;111(38):13786-9
pubmed: 25201966
Phys Rev Lett. 2018 Mar 9;120(10):107701
pubmed: 29570311
Phys Rev Lett. 2006 Sep 15;97(11):116403
pubmed: 17025911
Phys Rev Lett. 2012 Nov 16;109(20):203006
pubmed: 23215485