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

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2012

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Dal Conte, Stefano
Giannetti, Claudio
Coslovich, Giacomo
Cilento, Federico
Abebaw, Tadesse
Banfi, Francesco
Ferrini, Gabriele
Eisaki, Hiroshi
Greven, Martin
et al.

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https://doi.org/10.1126/science.1216765
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http://arxiv.org/abs/1203.0588

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Science. American Association for the Advancement of Science (AAAS). 2012, 335(6076), pp. 1600-1603. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1216765

Zusammenfassung

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 Bi2Sr2Ca0.92Y0.08Cu2O8+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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ISO 690DAL CONTE, Stefano, Claudio GIANNETTI, Giacomo COSLOVICH, Federico CILENTO, Davide BOSSINI, Tadesse ABEBAW, Francesco BANFI, Gabriele FERRINI, Hiroshi EISAKI, Martin GREVEN, 2012. Disentangling the electronic and phononic glue in a high-Tc superconductor. In: Science. American Association for the Advancement of Science (AAAS). 2012, 335(6076), pp. 1600-1603. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1216765
BibTex
@article{DalConte2012-03-30Disen-53355,
  year={2012},
  doi={10.1126/science.1216765},
  title={Disentangling the electronic and phononic glue in a high-T<sub>c</sub> superconductor},
  number={6076},
  volume={335},
  issn={0036-8075},
  journal={Science},
  pages={1600--1603},
  author={Dal Conte, Stefano and Giannetti, Claudio and Coslovich, Giacomo and Cilento, Federico and Bossini, Davide and Abebaw, Tadesse and Banfi, Francesco and Ferrini, Gabriele and Eisaki, Hiroshi and Greven, Martin}
}
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