Two-band superconductivity in Pb from ab initio calculations (Articolo in rivista)

Type

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

Label

• Two-band superconductivity in Pb from ab initio calculations (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.75.054508 (literal)

Alternative label

• Floris, A; Sanna, A; Massidda, S; Gross, EKU (2007)
  Two-band superconductivity in Pb from ab initio calculations
  in Physical review. B, Condensed matter and materials physics
  (literal)

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

• Floris, A; Sanna, A; Massidda, S; Gross, EKU (literal)

Pagina inizio

• 54508 (literal)

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

• http://prb.aps.org/abstract/PRB/v75/i5/e054508 (literal)

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

• 75 (literal)

Rivista

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

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

• 5 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany; Univ Cagliari, INFM SLACS, Sardinian Lab Computat Mat Sci, I-09124 Cagliari, Italy; Univ Cagliari, Dipartimento Sci Fisiche, I-09124 Cagliari, Italy (literal)

Titolo

• Two-band superconductivity in Pb from ab initio calculations (literal)

Abstract

• We perform first-principles calculations of the band and k-point resolved superconducting gap of Pb in the framework of the density functional theory for superconductors. Without any adjustable parameter or assuption different from s-wave symmetry, we find two different values of the gap on the two sheets of the Fermi surface, which can be related to the different electron-phonon couplings characterizing the electronic states in the corresponding bands. These, in turn, derive from the different orbital character of the electronic states. We also find some intraband gap anisotropy in each Fermi surface sheet. Our calculated gap, critical temperature and total anisotropy of the gap are in good agreement with tunneling experiments. We estimate an approximate to 8% enhancement of T-c coming from the gap anisotropy. However, the experimentally found T-3 temperature dependence of the specific heat cannot be found within our assumed anisotropic s-wave gap symmetry. (literal)

Prodotto di

• Teoria e modeling computazionale di materiali e processi per le nanoscienze (MD.P06.014.001) (Modulo)
• Superconduttività e sue applicazioni di potenza (MD.P04.011.001) (Modulo)

Autore CNR

• SANDRO MASSIDDA (Persona)

Insieme di parole chiave

• Parole chiave di "Two-band superconductivity in Pb from ab initio calculations" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• SANDRO MASSIDDA (Persona)

Prodotto

• Superconduttività e sue applicazioni di potenza (MD.P04.011.001) (Modulo)
• Teoria e modeling computazionale di materiali e processi per le nanoscienze (MD.P06.014.001) (Modulo)

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

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

Insieme di parole chiave di

• Parole chiave di "Two-band superconductivity in Pb from ab initio calculations" (Insieme di parole chiave)