Linked Life Data

18233401

Source:http://linkedlifedata.com/resource/pubmed/id/18233401

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
23
pubmed:dateCreated
2008-1-31
pubmed:abstractText
Using high-resolution angle-resolved photoemission spectroscopy we have studied the momentum and photon energy dependence of the anomalous high-energy dispersion, termed waterfalls, between the Fermi level and 1 eV binding energy in several high-T_{c} superconductors. We observe strong changes of the dispersion between different Brillouin zones and a strong dependence on the photon energy around 75 eV, which we associate with the resonant photoemission at the Cu3p-->3d_{x;{2}-y;{2}} edge. We conclude that the high-energy "waterfall" dispersion results from a strong suppression of the photoemission intensity at the center of the Brillouin zone due to matrix element effects and is, therefore, not an intrinsic feature of the spectral function. This indicates that the new high-energy scale in the electronic structure of cuprates derived from the waterfall-like dispersion may be incorrect.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Dec
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
99
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
237002
pubmed:year
2007
pubmed:articleTitle
Momentum and energy dependence of the anomalous high-energy dispersion in the electronic structure of high temperature superconductors.
pubmed:affiliation
Institute for Solid State Research, IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany.
pubmed:publicationType
Journal Article