Document Detail


Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors.
MedLine Citation:
PMID:  11484045     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Coupling between electrons and phonons (lattice vibrations) drives the formation of the electron pairs responsible for conventional superconductivity. The lack of direct evidence for electron-phonon coupling in the electron dynamics of the high-transition-temperature superconductors has driven an intensive search for an alternative mechanism. A coupling of an electron with a phonon would result in an abrupt change of its velocity and scattering rate near the phonon energy. Here we use angle-resolved photoemission spectroscopy to probe electron dynamics-velocity and scattering rate-for three different families of copper oxide superconductors. We see in all of these materials an abrupt change of electron velocity at 50-80 meV, which we cannot explain by any known process other than to invoke coupling with the phonons associated with the movement of the oxygen atoms. This suggests that electron-phonon coupling strongly influences the electron dynamics in the high-temperature superconductors, and must therefore be included in any microscopic theory of superconductivity.
Authors:
A Lanzara; P V Bogdanov; X J Zhou; S A Kellar; D L Feng; E D Lu; T Yoshida; H Eisaki; A Fujimori; K Kishio; J I Shimoyama; T Noda; S Uchida; Z Hussain; Z X Shen
Related Documents :
18849975 - Universal link between the boson peak and transverse phonons in glass.
18518065 - Crossed andreev reflection in a graphene bipolar transistor.
18517825 - Universal optical conductance of graphite.
16497065 - Model of saturated lithium ammonia as a single-component liquid metal.
19791365 - Synchrotron photoionization measurements of combustion intermediates: photoionization e...
17303745 - Applications of modern ferroelectrics.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nature     Volume:  412     ISSN:  0028-0836     ISO Abbreviation:  Nature     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-08-02     Completed Date:  2001-08-23     Revised Date:  2003-10-31    
Medline Journal Info:
Nlm Unique ID:  0410462     Medline TA:  Nature     Country:  England    
Other Details:
Languages:  eng     Pagination:  510-4     Citation Subset:  -    
Affiliation:
Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Ground-based observation of emission lines from the corona of a red-dwarf star.
Next Document:  Fragile-to-strong transition and polyamorphism in the energy landscape of liquid silica.