Quasiparticle state density on the surface of superconducting thin films of MgB2 (Articolo in rivista)

Type

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

Label

• Quasiparticle state density on the surface of superconducting thin films of MgB2 (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

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

• 10.1088/0953-2048/16/2/307 (literal)

Alternative label

• Bobba F.; Roditchev D.; Lamy R.; Choi E.-M.; Kim H.-J.; Kang W.N.; Ferrando V.; Ferdeghini C.; Giubileo F.; Sacks W.; Lee S.-I.; Klein J.; Cucolo A.M. (2003)
  Quasiparticle state density on the surface of superconducting thin films of MgB2
  in Superconductor science and technology (Print)
  (literal)

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

• Bobba F.; Roditchev D.; Lamy R.; Choi E.-M.; Kim H.-J.; Kang W.N.; Ferrando V.; Ferdeghini C.; Giubileo F.; Sacks W.; Lee S.-I.; Klein J.; Cucolo A.M. (literal)

Pagina inizio

• 167 (literal)

Pagina fine

• 170 (literal)

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

• http://www.scopus.com/inward/record.url?eid=2-s2.0-0037322786&partnerID=q2rCbXpz (literal)

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

• 16 (literal)

Rivista

• Superconductor science and technology (Rivista)

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

• 2 (literal)

Note

• Scopu (literal)

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

• Groupe de Physique des Solides, UMR75-88 au CNRS, Universities Paris 6 et 7, Paris, France; Department of Physics, University of Salerno, Salerno, Italy; NCRICS, Department of Physics, Pohang University, Pohang, South Korea; Department of Physics, University of Genoa, Genoa, Italy (literal)

Titolo

• Quasiparticle state density on the surface of superconducting thin films of MgB2 (literal)

Abstract

• High-speed scanning tunnelling spectroscopy (STS) was used at low temperature to study the quasiparticle excitation spectrum on the surface of c-axis-oriented superconducting thin films of MgB2. The tunnelling spectra measured on as-grown films were compared with those acquired on chemically etched samples. In most cases the STS reveals only one small superconducting gap to be present in the tunnelling spectra, consistent with c-axis tunnelling and the particular electronic band structure of MgB2. We found that the etching leads to the enhancement of the gap energy by 25% from 2.2 ± 0.3 meV to 2.8 ± 0.3 meV, and to the modification of the temperature dependence of the superconducting gap which, in both cases, has clearly a non-BCS shape. We argue that the modification of the electronic structure at the surface of the material due to the etching is responsible for these changes and discuss the possible origins of the effect. (literal)

Prodotto di

• Materiali e dispositivi superconduttori e ibridi (MD.P04.024.002) (Modulo)

Autore CNR

• FILIPPO GIUBILEO (Unità di personale interno)
• CARLO FERDEGHINI (Persona)
• Fabrizio Bobba (Unità di personale esterno)
• ANNA MARIA CUCOLO (Unità di personale esterno)

Incoming links:

Autore CNR di

• CARLO FERDEGHINI (Persona)
• FILIPPO GIUBILEO (Unità di personale interno)
• ANNA MARIA CUCOLO (Unità di personale esterno)
• Fabrizio Bobba (Unità di personale esterno)

Prodotto

• Materiali e dispositivi superconduttori e ibridi (MD.P04.024.002) (Modulo)

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

• Superconductor science and technology (Rivista)