High-Temperature Optical Spectral Weight and Fermi-liquid Renormalization in Bi-Based Cuprate Superconductors (Articolo in rivista)

Type
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  • High-Temperature Optical Spectral Weight and Fermi-liquid Renormalization in Bi-Based Cuprate Superconductors (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.105.077002 (literal)
Alternative label
  • Nicoletti, D(1); Limaj, O(2); Calvani, P(1); Rohringer, G(3); Toschi, A(3); Sangiovanni, G(3); Capone, M(4); Held, K(3); Ono, S(5); Ando, Y(6); Lupi, S(2) (2010)
    High-Temperature Optical Spectral Weight and Fermi-liquid Renormalization in Bi-Based Cuprate Superconductors
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Nicoletti, D(1); Limaj, O(2); Calvani, P(1); Rohringer, G(3); Toschi, A(3); Sangiovanni, G(3); Capone, M(4); Held, K(3); Ono, S(5); Ando, Y(6); Lupi, S(2) (literal)
Pagina inizio
  • 770021 (literal)
Pagina fine
  • 770024 (literal)
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  • 105 (literal)
Rivista
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  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1CNR-SPIN and Dipartimento di Fisica, Universita` di Roma ''La Sapienza'', Piazzale A. Moro 2, I-00185 Roma, Italy 2CNR-IOM, and Dipartimento di Fisica, Universita` di Roma ''La Sapienza'', Piazzale A. Moro 2, I-00185 Roma, Italy 3Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria 4CNR-SMC and Dipartimento di Fisica, Universita` di Roma ''La Sapienza'', Piazzale A. Moro 2, I-00185 Roma, Italy 5Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, Japan 6Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan (literal)
Titolo
  • High-Temperature Optical Spectral Weight and Fermi-liquid Renormalization in Bi-Based Cuprate Superconductors (literal)
Abstract
  • The optical conductivity ?SIGMA(OMEGA) and the spectral weight W(T) of two superconducting cuprates at optimum doping, Bi2Sr2?xLaxCuO6 and Bi2Sr2CaCu2O8, have been first measured up to 500 K. Above 300 K, WðTÞ deviates from the usual T2 behavior in both compounds, even though ?SIGMA(0) remains larger than the Ioffe-Regel limit. The deviation is surprisingly well described by the T4 term of the Sommerfeld expansion, but its coefficients are enhanced by strong correlation, as shown by the good agreement with dynamical mean field calculations. (literal)
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