Modulation of charge-density waves by superlattice structures
dc.contributor.author | Malvezzi, André Luiz [UNESP] | |
dc.contributor.author | Paiva, Thereza | |
dc.contributor.author | dos Santos, Raimundo R. | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Universidade Federal do Rio de Janeiro (UFRJ) | |
dc.date.accessioned | 2014-05-20T15:28:32Z | |
dc.date.available | 2014-05-20T15:28:32Z | |
dc.date.issued | 2006-05-01 | |
dc.description.abstract | We discuss the interplay between electronic correlations and an underlying superlattice structure in determining the period of charge density waves (CDW's), by considering a one-dimensional Hubbard model with a repeated (nonrandom) pattern of repulsive (U > 0) and free (U=0) sites. Density matrix renormalization group diagonalization of finite systems (up to 120 sites) is used to calculate the charge-density correlation function and structure factor in the ground state. The modulation period can still be predicted through effective Fermi wave vectors k(F)(*) and densities, and we have found that it is much more sensitive to electron (or hole) doping, both because of the narrow range of densities needed to go from q(*)=0 to pi, but also due to sharp 2k(F)(*)-4k(F)(*) transitions; these features render CDW's more versatile for actual applications in heterostructures than in homogeneous systems. | en |
dc.description.affiliation | Univ Estadual Paulista, Fac Ciências, Dept Fis, BR-17015970 Bauru, SP, Brazil | |
dc.description.affiliation | Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio de Janeiro, Brazil | |
dc.description.affiliationUnesp | Univ Estadual Paulista, Fac Ciências, Dept Fis, BR-17015970 Bauru, SP, Brazil | |
dc.format.extent | 4 | |
dc.identifier | http://dx.doi.org/10.1103/PhysRevB.73.193407 | |
dc.identifier.citation | Physical Review B. College Pk: Amer Physical Soc, v. 73, n. 19, 4 p., 2006. | |
dc.identifier.doi | 10.1103/PhysRevB.73.193407 | |
dc.identifier.file | WOS000237950400031.pdf | |
dc.identifier.issn | 1098-0121 | |
dc.identifier.lattes | 4459191234201599 | |
dc.identifier.uri | http://hdl.handle.net/11449/38324 | |
dc.identifier.wos | WOS:000237950400031 | |
dc.language.iso | eng | |
dc.publisher | Amer Physical Soc | |
dc.relation.ispartof | Physical Review B | |
dc.relation.ispartofsjr | 1,604 | |
dc.rights.accessRights | Acesso aberto | pt |
dc.source | Web of Science | |
dc.title | Modulation of charge-density waves by superlattice structures | en |
dc.type | Artigo | pt |
dcterms.license | http://publish.aps.org/authors/transfer-of-copyright-agreement | |
dcterms.rightsHolder | Amer Physical Soc | |
dspace.entity.type | Publication | |
relation.isOrgUnitOfPublication | aef1f5df-a00f-45f4-b366-6926b097829b | |
relation.isOrgUnitOfPublication.latestForDiscovery | aef1f5df-a00f-45f4-b366-6926b097829b | |
unesp.author.lattes | 4459191234201599[1] | |
unesp.author.orcid | 0000-0002-3195-9551[1] | |
unesp.author.orcid | 0000-0002-4199-3809[2] | |
unesp.author.orcid | 0000-0002-4469-621X[3] | |
unesp.campus | Universidade Estadual Paulista (UNESP), Faculdade de Ciências, Bauru | pt |
unesp.department | Física - FC | pt |
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