Anelastic spectroscopy study of the spin-glass and cluster spin-glass phases of La2-xSrxCuO4 (0.015 < x < 0.03) (Articolo in rivista)

Type
Label
  • Anelastic spectroscopy study of the spin-glass and cluster spin-glass phases of La2-xSrxCuO4 (0.015 < x < 0.03) (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.66.094503 (literal)
Alternative label
  • Paolone A. (1), Cordero F. (2), Cantelli R. (1), Ferretti M. (3) (2002)
    Anelastic spectroscopy study of the spin-glass and cluster spin-glass phases of La2-xSrxCuO4 (0.015 < x < 0.03)
    in Physical review. B, Condensed matter
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Paolone A. (1), Cordero F. (2), Cantelli R. (1), Ferretti M. (3) (literal)
Pagina inizio
  • 94503 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 66 (literal)
Rivista
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  • 5 (literal)
Note
  • Scopu (literal)
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  • (1) Università di Roma \"La Sapienza,\" Dipartimento di Fisica, Piazzale Aldo Moro 2, I-00185 Roma, and INFM, Italy (2) CNR, Area di Ricerca di Roma-Tor Vergata, Istituto di Acustica \"O.M. Corbino,\" Via del Fosso del Cavaliere 100, I-00133 Roma, and INFM, Italy (3) Università di Genova, Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, I-16146 Genova, and INFM, Italy (literal)
Titolo
  • Anelastic spectroscopy study of the spin-glass and cluster spin-glass phases of La2-xSrxCuO4 (0.015 < x < 0.03) (literal)
Abstract
  • The anelastic spectra of La2-xSrxCuO4 have been measured at liquid-He temperatures slightly below and above the concentration xc?0.02, which is considered to separate the spin-glass phase from the cluster spin-glass (CSG) phase. For x<~xc, all the elastic energy-loss functions show a step below the temperature Tg(x=0.02) of freezing into the CSG state, similar to what is found in samples well within the CSG phase, but with a smaller amplitude. The excess dissipation in the CSG state is attributed to the motion of the domain walls between the clusters of antiferromagnetically correlated spin. These results are in agreement with the recent proposal, based on inelastic neutron scattering, of an electronic phase separation between regions with x~0 and x~0.02, at least for x>0.015. (literal)
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