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Dal Conte S, Giannetti C, Coslovich G, et al. Disentangling the electronic and phononic glue in a high-Tc superconductor. Science. 2012;335(6076):1600-3doi: 10.1126/science.1216765.
Dal Conte, S., Giannetti, C., Coslovich, G., Cilento, F., Bossini, D., Abebaw, T., Banfi, F., Ferrini, G., Eisaki, H., Greven, M., Damascelli, A., van der Marel, D., & Parmigiani, F. (2012). Disentangling the electronic and phononic glue in a high-Tc superconductor. Science (New York, N.Y.), 335(6076), 1600-3. https://doi.org/10.1126/science.1216765
Dal Conte, S, et al. "Disentangling the electronic and phononic glue in a high-Tc superconductor." Science (New York, N.Y.) vol. 335,6076 (2012): 1600-3. doi: https://doi.org/10.1126/science.1216765
Dal Conte S, Giannetti C, Coslovich G, Cilento F, Bossini D, Abebaw T, Banfi F, Ferrini G, Eisaki H, Greven M, Damascelli A, van der Marel D, Parmigiani F. Disentangling the electronic and phononic glue in a high-Tc superconductor. Science. 2012 Mar 30;335(6076):1600-3. doi: 10.1126/science.1216765. PMID: 22461606.
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Science. 2012 Mar 30;335(6076):1600-3. doi: 10.1126/science.1216765.

Disentangling the electronic and phononic glue in a high-Tc superconductor.

Science (New York, N.Y.)

S Dal Conte, C Giannetti, G Coslovich, F Cilento, D Bossini, T Abebaw, F Banfi, G Ferrini, H Eisaki, M Greven, A Damascelli, D van der Marel, F Parmigiani

Affiliations

  1. Department of Physics A. Volta, Università degli Studi di Pavia, Pavia, Italy.

PMID: 22461606 DOI: 10.1126/science.1216765

Abstract

Unveiling the nature of the bosonic excitations that mediate the formation of Cooper pairs is a key issue for understanding unconventional superconductivity. A fundamental step toward this goal would be to identify the relative weight of the electronic and phononic contributions to the overall frequency (Ω)-dependent bosonic function, Π(Ω). We performed optical spectroscopy on Bi(2)Sr(2)Ca(0.92)Y(0.08)Cu(2)O(8+δ) crystals with simultaneous time and frequency resolution; this technique allowed us to disentangle the electronic and phononic contributions by their different temporal evolution. The spectral distribution of the electronic excitations and the strength of their interaction with fermionic quasiparticles fully account for the high critical temperature of the superconducting phase transition.

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