Noise theory of dc nano-SQUIDs based on Dayem nanobridges (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Noise theory of dc nano-SQUIDs based on Dayem nanobridges (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.84.224516 (literal)

Alternative label

• Granata, C.; Vettoliere, A.; Russo, M.; Ruggiero, B. (2011)
  Noise theory of dc nano-SQUIDs based on Dayem nanobridges
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Granata, C.; Vettoliere, A.; Russo, M.; Ruggiero, B. (literal)

Pagina inizio

• 224516-1 (literal)

Pagina fine

• 224516-7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 84 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• PHYSICAL REVIEW b 84, 224516 (2011) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 22 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche (CNR) (literal)

Titolo

• Noise theory of dc nano-SQUIDs based on Dayem nanobridges (literal)

Abstract

• In the recent years, nanoscale superconducting quantum interference devices (nano-SQUIDs) played a fundamental role in the study of small spin systems. Nano-SQUIDs typically employ nano-Dayem bridges having dimensions (length L and/or width W) greater than coherence length xi of the superconducting film. They exhibit characteristics different from those of standard SQUIDs because the current-phase relationship (CPR) is nonsinusoidal, rendering most of the theoretical predictions based on the standard SQUID theory usually unreliable. Here, we present a noise theory of dc nano-SQUIDs based on Dayem nanobridges. We have computed the main characteristics of this quantum device including current-voltage and voltage-magnetic flux characteristics, magnetic flux-to-voltage transfer factor, and spectral densities of voltage and magnetic flux noise for L/xi ratios ranging from 1 (sinusoidal limit) to 3.5 (hysteretic limit). The CPRs have been computed by using the theory of Josephson weak links based on the Ginzburg-Landau equation. The results show a dependence of the magnetic flux noise spectral density on (L/xi)(4/3) involving a degradation of about a factor of five between the two extreme cases and are consistent with experimentally measured magnetic flux noises reported in the literature. These results provide useful information for both device physics and their applications. (literal)

Prodotto di

• Dispositivi e sensori quantici (MD.P04.022.001) (Modulo)
• Istituto di cibernetica \"Edoardo Caianiello\" (ISASI) (Istituto)
• Meccanica quantistica macroscopica e computazione quantistica (MD.P04.022.005) (Modulo)

Autore CNR

• ANTONIO VETTOLIERE (Unità di personale esterno)
• MAURIZIO RUSSO (Unità di personale interno)
• BERARDO RUGGIERO (Persona)
• CARMINE GRANATA (Persona)

Incoming links:

Autore CNR di

• CARMINE GRANATA (Persona)
• MAURIZIO RUSSO (Unità di personale interno)
• BERARDO RUGGIERO (Persona)
• ANTONIO VETTOLIERE (Unità di personale esterno)

Prodotto

• Istituto di cibernetica \"Edoardo Caianiello\" (ISASI) (Istituto)
• Meccanica quantistica macroscopica e computazione quantistica (MD.P04.022.005) (Modulo)
• Dispositivi e sensori quantici (MD.P04.022.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)