dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Universidade Federal do Rio de Janeiro (UFRJ) | |
dc.date.accessioned | 2014-05-20T15:28:32Z | |
dc.date.accessioned | 2022-10-05T16:49:24Z | |
dc.date.available | 2014-05-20T15:28:32Z | |
dc.date.available | 2022-10-05T16:49:24Z | |
dc.date.created | 2014-05-20T15:28:32Z | |
dc.date.issued | 2006-05-01 | |
dc.identifier | Physical Review B. College Pk: Amer Physical Soc, v. 73, n. 19, 4 p., 2006. | |
dc.identifier | 1098-0121 | |
dc.identifier | http://hdl.handle.net/11449/38324 | |
dc.identifier | 10.1103/PhysRevB.73.193407 | |
dc.identifier | WOS:000237950400031 | |
dc.identifier | WOS000237950400031.pdf | |
dc.identifier | 4459191234201599 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3909667 | |
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. | |
dc.language | eng | |
dc.publisher | Amer Physical Soc | |
dc.relation | Physical Review B | |
dc.relation | 1,604 | |
dc.rights | Acesso restrito | |
dc.source | Web of Science | |
dc.title | Modulation of charge-density waves by superlattice structures | |
dc.type | Artigo | |