Linked Life Data

16803261

Source:http://linkedlifedata.com/resource/pubmed/id/16803261

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
21
pubmed:dateCreated
2006-6-28
pubmed:abstractText
We report a state-of-the-art photoemission (angle-resolved photoemission spectroscopy) study of high quality single crystals of NaxCoO2 the series focusing on the fine details of the low-energy states. The Fermi velocity is found to be small (<0.5 eV A) and only weakly anisotropic over the Fermi surface at all dopings, setting the size of the pair wave function to be on the order of 10-20 nm. In the low-doping regime, the exchange interlayer splitting vanishes and two-dimensional collective instabilities such as 120 degrees -type fluctuations become kinematically allowed. Our results suggest that the unusually small Fermi velocity and the unique symmetry of kinematic instabilities distinguish cobaltates from most other oxide superconductors.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jun
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
96
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
216405
pubmed:dateRevised
2008-10-7
pubmed:year
2006
pubmed:articleTitle
Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors.
pubmed:affiliation
Department of Physics, Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544, USA.
pubmed:publicationType
Journal Article