dc.contributor.author
Timpanaro, André M.
dc.contributor.author
Guarnieri, Giacomo
dc.contributor.author
Landi, Gabriel T.
dc.date.accessioned
2024-03-27T07:47:15Z
dc.date.available
2024-03-27T07:47:15Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/42692
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-42415
dc.description.abstract
Thermodynamic currents, such as energy, heat, and entropy production, can fluctuate significantly at the nanoscale. However, some fluctuate less than others. Hyperaccurate currents are defined as those which fluctuate the least, in the sense that they maximize the signal-to-noise ratio (precision). In this Letter we analytically determine what are the hyperaccurate currents in quantum thermoelectrics, modeled by coherent transport in the Landauer-Büttiker formalism. Our results yield a tight and general bound on precision, which replace the classical thermodynamic uncertainty relations, that can be violated in quantum thermoelectrics. They also allow us to address the question of how close to hyperaccurate is a given current. We illustrate our findings for smooth boxcar functions, and for a double quantum dot operating as a thermal machine. In the latter, we use our results to establish the parameter ranges for which the output power of an autonomous engine can become hyperaccurate arbitrarily far from equilibrium.
en
dc.format.extent
8 Seiten (Manuskriptversion)
dc.rights.uri
http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen
dc.subject
Nonequilibrium fluctuations
en
dc.subject
Quantum thermodynamics
en
dc.subject
Thermoelectrics
en
dc.subject
Transport phenomena
en
dc.subject
Landauer formula
en
dc.subject
S-matrix method in transport
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik
dc.title
Hyperaccurate thermoelectric currents
dc.type
Wissenschaftlicher Artikel
dc.identifier.sepid
97436
dcterms.bibliographicCitation.articlenumber
115432
dcterms.bibliographicCitation.doi
10.1103/PhysRevB.107.115432
dcterms.bibliographicCitation.journaltitle
Physical Review B
dcterms.bibliographicCitation.number
11
dcterms.bibliographicCitation.originalpublishername
American Physical Society
dcterms.bibliographicCitation.originalpublisherplace
College Park, MD
dcterms.bibliographicCitation.volume
107 (2023)
dcterms.bibliographicCitation.url
https://link.aps.org/doi/10.1103/PhysRevB.107.115432
dcterms.rightsHolder.url
https://journals.aps.org/authors/editorial-policies-open-access
refubium.affiliation
Physik
refubium.affiliation.other
Institut für Theoretische Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2469-9950
dcterms.isPartOf.eissn
2469-9969