| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | Malvezzi, André Luiz | |
| dc.creator | Paiva, Thereza | |
| dc.creator | dos Santos, Raimundo R. | |
| dc.date | 2014-05-20T15:28:32Z | |
| dc.date | 2016-10-25T18:03:36Z | |
| dc.date | 2014-05-20T15:28:32Z | |
| dc.date | 2016-10-25T18:03:36Z | |
| dc.date | 2006-05-01 | |
| dc.date.accessioned | 2017-04-06T00:07:39Z | |
| dc.date.available | 2017-04-06T00:07:39Z | |
| 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 | http://acervodigital.unesp.br/handle/11449/38324 | |
| dc.identifier | 10.1103/PhysRevB.73.193407 | |
| dc.identifier | WOS:000237950400031 | |
| dc.identifier | WOS000237950400031.pdf | |
| dc.identifier | http://dx.doi.org/10.1103/PhysRevB.73.193407 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/881457 | |
| dc.description | 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.rights | info:eu-repo/semantics/closedAccess | |
| dc.title | Modulation of charge-density waves by superlattice structures | |
| dc.type | Otro | |
