Linked Life Data

11461493

Source:http://linkedlifedata.com/resource/pubmed/id/11461493

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2001-7-19
pubmed:abstractText
The spin-excitation continuum, expected to dominate the low-energy fluctuation spectrum in the Haldane spin chain around the Brillouin zone center, q = 0, is directly observed by inelastic magnetic neutron scattering in the S = 1 quasi-1D antiferromagnet CsNiCl3. We find that the single mode approximation fails, and that a finite energy width appears in the dynamic correlation function S(q,omega) for q less, similar 0.5 pi. The width increases with decreasing q, while S(q,omega) acquires an asymmetric shape qualitatively similar to that predicted for the two-magnon continuum in the nonlinear sigma-model.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jul
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
87
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
017202
pubmed:dateRevised
2003-9-25
pubmed:year
2001
pubmed:articleTitle
Continuum in the spin-excitation spectrum of a haldane chain observed by neutron scattering in CsNiCl3.
pubmed:affiliation
Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
pubmed:publicationType
Journal Article