Direct measurement of sheet resistance R-square in cuprate systems: Evidence of a fermionic scenario in a metal-insulator transition (Articolo in rivista)

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  • Direct measurement of sheet resistance R-square in cuprate systems: Evidence of a fermionic scenario in a metal-insulator transition (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.98.036401 (literal)
Alternative label
  • Orgiani P.; Aruta C.; Balestrino G.; Born D.; Maritato L.; Medaglia P.G.; Stornaiuolo D.; Tafuri F.; Tebano A. (2007)
    Direct measurement of sheet resistance R-square in cuprate systems: Evidence of a fermionic scenario in a metal-insulator transition
    in Physical review letters (Print); American Physical Society (APS), College Pk (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Orgiani P.; Aruta C.; Balestrino G.; Born D.; Maritato L.; Medaglia P.G.; Stornaiuolo D.; Tafuri F.; Tebano A. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prl.aps.org/abstract/PRL/v98/i3/e036401 (literal)
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  • 98 (literal)
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  • 4 (literal)
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  • 3 (literal)
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  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
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  • Univ Salerno, CNR, INFM Supermat, I-84081 Baronissi, SA, Italy; Univ Salerno, Dept Phys, I-84081 Baronissi, SA, Italy; Univ Roma Tor Vergata, CNR, INFM Coherentia, Rome, Italy; Univ Roma Tor Vergata, Dept Mech Engn, Rome, Italy; Univ Naples 2, Dept Informat Engn, Aversa, CE, Italy; Univ Salerno, CNR, INFM Coherentia, I-84081 Baronissi, SA, Italy; Univ Naples, CNR, INFM Coherentia, Naples, Italy; Univ Naples, Dept Phys, Naples, Italy (literal)
Titolo
  • Direct measurement of sheet resistance R-square in cuprate systems: Evidence of a fermionic scenario in a metal-insulator transition (literal)
Abstract
  • The metal-insulator transition (MIT) has been studied in Ba0.9Nd0.1CuO2+x/CaCuO2 ultrathin cuprate structures. Such structures allow for the direct measurement of the 2D sheet resistance R-square, eliminating ambiguity in the definition of the effective thickness of the conducting layer in high temperature superconductors. The MIT occurs at room temperature for experimental values of R-square close to the 25.8 k Omega universal quantum resistance. All data confirm the assumption that each CaCuO2 layer forms a 2D superconducting sheet within the superconducting block, which can be described as weak-coupled equivalent sheets in parallel. (literal)
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