Supersolid structure and excitation spectrum of soft-core bosons in three dimensions (Articolo in rivista)

Type

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

Label

• Supersolid structure and excitation spectrum of soft-core bosons in three dimensions (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

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

• 10.1103/PhysRevA.88.033618 (literal)

Alternative label

• Ancilotto, Francesco; Rossi, Maurizio; Toigo, Flavio (2013)
  Supersolid structure and excitation spectrum of soft-core bosons in three dimensions
  in Physical review. A
  (literal)

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

• Ancilotto, Francesco; Rossi, Maurizio; Toigo, Flavio (literal)

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

• 88 (literal)

Rivista

• Physical review. A (Rivista)

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

• 10 (literal)

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

• 3 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• University of Padua; University of Padua; CNR IOM Democritos (literal)

Titolo

• Supersolid structure and excitation spectrum of soft-core bosons in three dimensions (literal)

Abstract

• By means of a mean-field method, we have studied the zero-temperature structure and excitation spectrum of a three-dimensional soft-core bosonic system for a value of the interaction strength that favors a crystal structure made of atomic nanoclusters arranged with fcc ordering. In addition to the longitudinal and transverse phonon branches expected for a normal crystal, the excitation spectrum shows a soft mode related to the breaking of gauge symmetry, which signals a partial superfluid character of the solid. Additional evidence of supersolidity is provided by the calculation of the superfluid fraction, which shows a first-order drop, from 1 to 0.4, at the liquid-supersolid transition and a monotonic decrease as the interaction strength parameter is increased. The conditions for the coexistence of the supersolid with the homogeneous superfluid are discussed, and the surface tension of a representative solid-liquid interface is calculated. (literal)

Prodotto di

• MD.P06.024.001 Fluidi quantistici e sistemi elettronici fortemente correlati alla nanoscala e in dispositivi (MD.P06.024.002) (Modulo)
• Superconduttività come cura di un comportamento metallico anomalo (MD.P02.024.001) (Modulo)

Autore CNR

• FRANCESCO ANCILOTTO (Persona)
• FLAVIO TOIGO (Persona)

Incoming links:

Autore CNR di

• FRANCESCO ANCILOTTO (Persona)
• FLAVIO TOIGO (Persona)

Prodotto

• MD.P06.024.001 Fluidi quantistici e sistemi elettronici fortemente correlati alla nanoscala e in dispositivi (MD.P06.024.002) (Modulo)
• Superconduttività come cura di un comportamento metallico anomalo (MD.P02.024.001) (Modulo)

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

• Physical review. A (Rivista)