File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Theory of excitons in the insulating Cu-O2 plane

TitleTheory of excitons in the insulating Cu-O2 plane
Authors
Issue Date1998
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 1998, v. 58 n. 20, p. 13520-13525 How to Cite?
AbstractWe use a local model to study the formation and the structure of the low-energy charge-transfer excitations in the insulating Cu-O2 plane. The elementary excitation is a bound exciton of spin singlet, consisting of a Cu+ and a neighboring spin singlet of Cu-O holes. The exciton can move through the lattice freely without disturbing the antiferromagnetic spin background, in contrast to the single hole motion. There are four eigenmodes of excitons with different symmetry. The p-wave-like exciton has a large dispersion width. The s-wave-like exciton mixes with the p state at finite momentum, and its dipole transition intensity is strongly anisotropic. The model is in excellent agreement with the electron energy-loss spectra in the insulating Sr2CuO2Cl2.
Persistent Identifierhttp://hdl.handle.net/10722/174619
ISSN
2001 Impact Factor: 3.07
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, FCen_US
dc.contributor.authorNg, KKen_US
dc.date.accessioned2012-11-26T08:46:33Z-
dc.date.available2012-11-26T08:46:33Z-
dc.date.issued1998en_US
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 1998, v. 58 n. 20, p. 13520-13525en_US
dc.identifier.issn0163-1829en_US
dc.identifier.urihttp://hdl.handle.net/10722/174619-
dc.description.abstractWe use a local model to study the formation and the structure of the low-energy charge-transfer excitations in the insulating Cu-O2 plane. The elementary excitation is a bound exciton of spin singlet, consisting of a Cu+ and a neighboring spin singlet of Cu-O holes. The exciton can move through the lattice freely without disturbing the antiferromagnetic spin background, in contrast to the single hole motion. There are four eigenmodes of excitons with different symmetry. The p-wave-like exciton has a large dispersion width. The s-wave-like exciton mixes with the p state at finite momentum, and its dipole transition intensity is strongly anisotropic. The model is in excellent agreement with the electron energy-loss spectra in the insulating Sr2CuO2Cl2.en_US
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_US
dc.titleTheory of excitons in the insulating Cu-O2 planeen_US
dc.typeArticleen_US
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_US
dc.identifier.authorityZhang, FC=rp00840en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0000775135en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000775135&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume58en_US
dc.identifier.issue20en_US
dc.identifier.spage13520en_US
dc.identifier.epage13525en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhang, FC=14012468800en_US
dc.identifier.scopusauthoridNg, KK=7403178987en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats