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Träfflista för sökning "WFRF:(Charpentier Sophie 1983) ;pers:(Orgiani P.)"

Sökning: WFRF:(Charpentier Sophie 1983) > Orgiani P.

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1.
  • Orgiani, P., et al. (författare)
  • The Role of Quantum Interference Effects in Normal-State Transport Properties of Electron-Doped Cuprates
  • 2015
  • Ingår i: Journal of Superconductivity and Novel Magnetism. - : Springer Science and Business Media LLC. - 1557-1947 .- 1557-1939. ; 28:12, s. 3481-3486
  • Tidskriftsartikel (refereegranskat)abstract
    • The normal-state resistivity of thin films of the infinite-layer electron-doped cuprate Sr (1-x) La (x) CuO (2 +/-delta) has been investigated. Under-doped samples, which clearly show a metal-to-insulator transition (MIT) at low temperatures, have allowed the determination of the fundamental physical mechanism behind the upturn of the resistivity, namely the quantum interference effects (QIEs) in three-dimensional systems. The occurrence of weak localization effects has been unambiguously proven by low-frequency voltage spectral density measurements, which show a linear dependence of the 1/f noise on the applied bias current at low temperatures. The identification of the QIEs at low temperatures has therefore allowed the determination of the high-temperature non-Fermi liquid metallic phase, which is dominated by a linear temperature dependence of the resistivity for all of the samples investigated.
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2.
  • Sacco, C., et al. (författare)
  • Low temperature hidden Fermi-liquid charge transport in under doped LaxSr1-xCuO2 infinite layer electron-doped thin films
  • 2019
  • Ingår i: Journal of Physics Condensed Matter. - 0953-8984 .- 1361-648X. ; 31:44
  • Tidskriftsartikel (refereegranskat)abstract
    • We have studied the low temperature electrical transport properties of La-x Sr1-xCuO2 thin films grown by oxide molecular beam epitaxy on (1 1 0) GdScO3 and TbScO3 substrates. The transmission electron microscopy measurements and the x-ray diffraction analysis confirmed the epitaxy of the obtained films and the study of their normal state transport properties, removing the ambiguity regarding the truly conducting layer, allowed to highlight the presence of a robust hidden Fermi liquid charge transport in the low temperature properties of infinite layer electron doped cuprate superconductors. These results are in agreement with recent observations performed in other p and n doped cuprate materials and point toward a general description of the superconducting and normal state properties in these compounds.
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