Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A(2)FeMoO(6) systems (A=Sr,Ca) (Articolo in rivista)

Type

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

Label

• Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A(2)FeMoO(6) systems (A=Sr,Ca) (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

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

• 10.1103/PhysRevB.76.172405 (literal)

Alternative label

• Marrocchelli, D; Postorino, P; Di Castro, D; Arcangeletti, E; Dore, P; Guidi, MC; Ray, S; Sarma, DD (2007)
  Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A(2)FeMoO(6) systems (A=Sr,Ca)
  in Physical review. B, Condensed matter and materials physics (Online)
  (literal)

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

• Marrocchelli, D; Postorino, P; Di Castro, D; Arcangeletti, E; Dore, P; Guidi, MC; Ray, S; Sarma, DD (literal)

Pagina inizio

• 172405-1 (literal)

Pagina fine

• 172405-4 (literal)

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

• 76 (literal)

Rivista

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

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

• 4 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Univ Roma La Sapienza, Coherentia CNR INFM, I-00185 Rome, Italy; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India; Indian Assoc Cultivat Sci, Dept Mat Sci, Calcutta 700032, India; Indian Assoc Cultivat Sci, Ctr Adv Mat, Calcutta 700032, India (literal)

Titolo

• Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A(2)FeMoO(6) systems (A=Sr,Ca) (literal)

Abstract

• We report on Raman measurements carried out on Ca2FeMoO6 and Sr2FeMoO6 double perovskites as functions of pressure (0-15 GPa) and of temperature (298-370 K). The Raman spectrum of both the samples is characterized by a phonon peak at similar to 460 cm(-1) whose large asymmetric profile is ascribed to a Fano resonance. The careful data analysis provides in particular the Fano asymmetry parameter q which results to be nearly independent from pressure and temperature, thus suggesting a remarkable stability of both charge-carrier density and charge-lattice coupling. Finally, our data allow us to ascribe the conductivity transition previously observed around 2 GPa in Sr2FeMoO6 not to an intrinsic property but to the pressure-induced opening of intergrain percolation paths. (literal)

Prodotto di

• Aspetti fondamentali della fisica delle perovskiti (MD.P04.018.001) (Modulo)

Autore CNR

• PAOLO DORE (Unità di personale esterno)
• PAOLO POSTORINO (Unità di personale esterno)
• DANIELE DI CASTRO (Persona)

Insieme di parole chiave

• Keywords of "Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A(2)FeMoO(6) systems (A=Sr,Ca)" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• PAOLO DORE (Unità di personale esterno)
• PAOLO POSTORINO (Unità di personale esterno)
• DANIELE DI CASTRO (Persona)

Prodotto

• Aspetti fondamentali della fisica delle perovskiti (MD.P04.018.001) (Modulo)

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

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

Insieme di parole chiave di

• Keywords of "Pressure and temperature dependence of the Fano resonance in the Raman spectrum of A(2)FeMoO(6) systems (A=Sr,Ca)" (Insieme di parole chiave)