Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/66527
Full metadata record
DC FieldValueLanguage
dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleExtended states in interacting disordered polyacetylenelike chainspt_BR
dc.contributor.authorLaks, Bpt_BR
dc.contributor.authorGalvao, DSpt_BR
dc.subject.wosDoped Conducting Polymerspt_BR
dc.subject.wosRandom-dimer Modelpt_BR
dc.subject.wosElectron Localizationpt_BR
dc.subject.wosMetal Transitionpt_BR
dc.subject.wosLow-temperaturept_BR
dc.subject.wosPolyanilinept_BR
dc.subject.wosTransportpt_BR
dc.subject.wosAbsencept_BR
dc.subject.wosTranspolyacetylenept_BR
dc.subject.wosAlternationpt_BR
dc.description.abstractIn spite of the enormous amount of theoretical and experimental work on conducting polymers, the actual mechanism involved in the transition to a metallic regime is still an open and polemical question. Recently, Galvao et al. have proposed, based on the study of long, disordered, one-dimensional chains, that disorder is in the origin of the metallic transition in conducting polymers. They suggest that disorder induces the appearance of extended (conducting) states near the Fermi level. Since in actual samples there are interactions among chains, one important question is whether this kind of state could survive when interactions among chains are taken into account in the calculations. In this work we show that extended states can exist even when the interaction among chains is taken implicitly into account. These results strongly support disorder as the physical mechanism behind the metallic transition in conducting polymers. The density of states of long chains was obtained through the use of the negative factor counting technique coupled to a tight-binding Hamiltonian.pt
dc.relation.ispartofPhysical Review Bpt_BR
dc.relation.ispartofabbreviationPhys. Rev. Bpt_BR
dc.publisher.cityCollege Pkpt_BR
dc.publisher.countryEUApt_BR
dc.publisherAmerican Physical Socpt_BR
dc.date.issued1997pt_BR
dc.date.monthofcirculation42186pt_BR
dc.identifier.citationPhysical Review B. American Physical Soc, v. 56, n. 3, n. 967, n. 970, 1997.pt_BR
dc.language.isoenpt_BR
dc.description.volume56pt_BR
dc.description.issuenumber3pt_BR
dc.description.firstpage967pt_BR
dc.description.lastpage970pt_BR
dc.rightsabertopt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.wosidWOS:A1997XM76600003pt_BR
dc.identifier.doi10.1103/PhysRevB.56.967pt_BR
dc.date.available2014-12-16T11:37:12Z
dc.date.available2015-11-26T16:26:10Z-
dc.date.accessioned2014-12-16T11:37:12Z
dc.date.accessioned2015-11-26T16:26:10Z-
dc.description.provenanceMade available in DSpace on 2014-12-16T11:37:12Z (GMT). No. of bitstreams: 1 WOSA1997XM76600003.pdf: 82341 bytes, checksum: 3a637f7edee882b4f06f7d5887d02bf5 (MD5) Previous issue date: 1997en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:26:10Z (GMT). No. of bitstreams: 2 WOSA1997XM76600003.pdf: 82341 bytes, checksum: 3a637f7edee882b4f06f7d5887d02bf5 (MD5) WOSA1997XM76600003.pdf.txt: 15624 bytes, checksum: 06e73a7bbc7a9dd6357032b8100d7b59 (MD5) Previous issue date: 1997en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/66527pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/66527
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/66527-
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
WOSA1997XM76600003.pdf80.41 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.