http://www.cnr.it/ontology/cnr/individuo/prodotto/ID168235
High-Temperature Optical Spectral Weight and Fermi-liquid Renormalization in Bi-Based Cuprate Superconductors (Articolo in rivista)
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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)
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- 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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