Document Detail


Disentangling the electronic and phononic glue in a high-Tc superconductor.
MedLine Citation:
PMID:  22461606     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
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.
Authors:
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
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  335     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-03-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1600-3     Citation Subset:  IM    
Affiliation:
Department of Physics A. Volta, Università degli Studi di Pavia, Pavia, Italy.
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