http://www.cnr.it/ontology/cnr/individuo/prodotto/ID184188
Interlayer coupling in ultrathin high TC artificial structures (Articolo in rivista)
- Type
- Label
- Interlayer coupling in ultrathin high TC artificial structures (Articolo in rivista) (literal)
- Anno
- 2001-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.64.020506 (literal)
- Alternative label
G.Balestrino, S.Lavanga, P.G.Medaglia, P.Orgiani, A.Tebano (2001)
Interlayer coupling in ultrathin high TC artificial structures
in Physical review. B, Condensed matter and materials physics; APS, American physical society, College Park, MD (Stati Uniti d'America)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- G.Balestrino, S.Lavanga, P.G.Medaglia, P.Orgiani, A.Tebano (literal)
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- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://prb.aps.org/abstract/PRB/v64/i2/e020506 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- ISI Web of Science (WOS) (literal)
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- Univ Roma Tor Vergata, INFM, Dipartimento Sci & Technol Fis & Energet, I-00133 Rome, Italy (literal)
- Titolo
- Interlayer coupling in ultrathin high TC artificial structures (literal)
- Abstract
- Artificially layered superlattices were grown, by stacking in sequence ultrathin epitaxial layers of (Ba(0.9),Nd(0.1))CuO(2+x) and CaCuO(2). Starting from [(Ba(0.9),Nd(0.1))CuO(2+x)](m)/[CaCuO(2)](2) superlattices with m = 2, the thickness of the Ba-Cu-O block, separating adjacent Ca-Cu-O superconducting blocks, was gradually increased up to m = 10. We found that, increasing m, superlattices show a moderate decrease of the critical temperature and a sizeable increase of the anisotropy. In the superlattices with m greater than or equal to4 the superconducting layers are completely decoupled, showing, relative to the m = 2 superlattice, a decrease of the transition temperature less than 10% and an increase of the anisotropy by a factor similar to2-3. Superconductivity at 55 K was found in ultrathin films only consisting of one (CaCuO(2))(2) layer sandwiched between five (Ba(0.9),Nd(0.1))CuO(2+x) layers, demonstrating that the interlayer coupling in m greater than or equal to4 superlattices is negligible. (literal)
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