Crossover from quarter-filling to half-filling in a one-dimensional electron system with a dimerized and quarter-filled band

Citation
M. Tsuchiizu et al., Crossover from quarter-filling to half-filling in a one-dimensional electron system with a dimerized and quarter-filled band, J PHYS JPN, 70(6), 2001, pp. 1460-1463
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
ISSN journal
0031-9015 → ACNP
Volume
70
Issue
6
Year of publication
2001
Pages
1460 - 1463
Database
ISI
SICI code
0031-9015(200106)70:6<1460:CFQTHI>2.0.ZU;2-K
Abstract
The interplay between quarter-filled and half-tilled umklapp scattering has been examined by applying the renormalization group method to a one-dimens ional quarter-filled electron system with dimerization, on-site (U) and nea rest-neighbor (V) repulsive interactions. The phase diagram on the U-V plan e is obtained at absolute zero temperature where tile Mott, insulator (the charge ordered insulator) is found for smaller (larger) V. By choosing the moderate parameter in the region of Mott insulator, it is shown that tile r esistivity exhibits a crossover from behavior of quarter-filling to that of half-filling with decreasing temperature.