Stick-slip nanofriction in trapped cold ion chains (Articolo in rivista)

Type

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

Label

• Stick-slip nanofriction in trapped cold ion chains (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

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

• 10.1103/PhysRevB.87.195418 (literal)

Alternative label

• Mandelli, D.; Vanossi, A.; Tosatti, E. (2013)
  Stick-slip nanofriction in trapped cold ion chains
  in Physical review. B, Condensed matter and materials physics
  (literal)

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

• Mandelli, D.; Vanossi, A.; Tosatti, E. (literal)

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

• 87 (literal)

Rivista

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

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

• 8 (literal)

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

• 19 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• International School for Advanced Studies; CNR IOM Democritos Natl Simulat Ctr; Abdus Salam International Centre for Theoretical Physics (literal)

Titolo

• Stick-slip nanofriction in trapped cold ion chains (literal)

Abstract

• Stick slip-the sequence of mechanical instabilities through which a slider advances on a solid substrate-is pervasive throughout sliding friction, from nanoscales to geological scales. Here we suggest that trapped cold ions in an optical lattice can also be of help in understanding stick-slip friction, and also the way friction changes when one of the sliders undergoes structural transitions. For that scope, we simulated the dynamical properties of a 101-ion chain, driven to slide back and forth by a slowly oscillating electric field in an incommensurate periodic \"corrugation\" potential of increasing magnitude U-0. We found the chain sliding to switch, as U-0 increases and before the Aubry transition, from a smooth-sliding regime with low dissipation to a stick-slip regime with high dissipation. In the stick-slip regime the onset of overall sliding is preceded by precursor events consisting of partial slips of a few ions only, leading to partial depinning of the chain, a nutshell remnant of precursor events at the onset of motion also observed in macroscopic sliders. Seeking to identify the possible effects on friction of a structural transition, we reduced the trapping potential aspect ratio until the ion chain shape turned from linear to zigzag. Dynamic friction was found to rise at the transition, reflecting the opening of other dissipation channels. (literal)

Prodotto di

• MD.P06.024.001 Fluidi quantistici e sistemi elettronici fortemente correlati alla nanoscala e in dispositivi (MD.P06.024.002) (Modulo)
• MD.P06.025.001 Teoria, simulazione e progetto assistito dal calcolatore di materiali nanostrutturati (MD.P06.025.002) (Modulo)

Autore CNR

• ANDREA VANOSSI (Persona)
• ERIO TOSATTI (Unità di personale esterno)

Incoming links:

Autore CNR di

• ERIO TOSATTI (Unità di personale esterno)
• ANDREA VANOSSI (Persona)

Prodotto

• MD.P06.024.001 Fluidi quantistici e sistemi elettronici fortemente correlati alla nanoscala e in dispositivi (MD.P06.024.002) (Modulo)
• MD.P06.025.001 Teoria, simulazione e progetto assistito dal calcolatore di materiali nanostrutturati (MD.P06.025.002) (Modulo)

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

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