Interband and intraband effects in the upper critical field of disordered MgB2 (Articolo in rivista)

Type

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

Label

• Interband and intraband effects in the upper critical field of disordered MgB2 (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

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

• 10.1103/PhysRevB.82.134512 (literal)

Alternative label

• Brotto, P; Pallecchi, I; Putti, M; D'Agliano, EG (2010)
  Interband and intraband effects in the upper critical field of disordered MgB2
  in Physical review. B, Condensed matter and materials physics
  (literal)

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

• Brotto, P; Pallecchi, I; Putti, M; D'Agliano, EG (literal)

Pagina inizio

• 134512 (literal)

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

• 82 (literal)

Rivista

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

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

• 10 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• 1Universitá degli Studi di Genova, via Dodecaneso 33, 16146 Genova, Italy 2CNR-SPIN, Corso Perrone 24, 16152 Genova, Italy (literal)

Titolo

• Interband and intraband effects in the upper critical field of disordered MgB2 (literal)

Abstract

• In this work the superconducting properties of disordered MgB2 in applied magnetic field are studied within the ??? model, by taking into account the presence of both interband and intraband scattering with impurities. This approach allows to extract the suppression of the critical temperature Tc and the enhancement of the upper critical field Hc2, as a consequence of the introduction of impurities in the samples. We analyze the dependence of Hc2 on temperature, anisotropy of the electronic structure, and intraband ? and ? band scattering rates. Comparing our numerical calculations with experimental data on irradiated samples, we find that irradiation defects mainly affect the mobility of ? carriers. These results rationalize why the Hc2 anisotropy of irradiated samples is quickly reduced with increasing doses and full suppression of superconductivity occurs at rather low-resistivity values. Moreover, our calculations point out that disorder in the ? bands affects only weakly the coupling constants and thus it could yield a significant enhancement of Hc2 without severe suppression of Tc. (literal)

Prodotto di

• MD.P04.011.001 Superconduttività e sue applicazioni di potenza (MD.P04.011.002) (Modulo)
• MD.P04.012.001 Materiali funzionali e dispositivi (MD.P04.012.003) (Modulo)

Autore CNR

• ILARIA PALLECCHI (Persona)
• Enrico Galleani (Unità di personale esterno)
• MARINA PUTTI (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Interband and intraband effects in the upper critical field of disordered MgB2" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ILARIA PALLECCHI (Persona)
• MARINA PUTTI (Unità di personale esterno)
• Enrico Galleani (Unità di personale esterno)

Prodotto

• MD.P04.012.001 Materiali funzionali e dispositivi (MD.P04.012.003) (Modulo)
• MD.P04.011.001 Superconduttività e sue applicazioni di potenza (MD.P04.011.002) (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 "Interband and intraband effects in the upper critical field of disordered MgB2" (Insieme di parole chiave)