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Title :Metal-Insulator Transition of the One-Dimensional U-V Model at Quarter Filling
Authors :Sano, Kazuhiro
Ono, Yoshiaki
Publisher :Elsevier
Issue Date :Jun-2002
Journal Title :Journal of Physics and Chemistry of Solids
Volume :63
Issue :6-8
Start Page :1567
End Page :1570
ISSN :0022-3697
Abstract :The metal-insulator transition of the one-dimensional extended Hubbard model with both on-site U and nearest neighbor V interactions is studied by a combination of the numerical diagonalization and the renormalization group (RG) method. We diagonalize finite size systems numerically and calculate the Luttinger-liquid parameter Kρ. Substituting the numerical result to the RG equations as the initial condition, we explicitly calculate the renormalized Kρ and the renormalized umk-lapp scattering parameter G. This approach gives the critical properties of the Kρ and the charge gap near the metal-insulator transition beyond the usual nite-size scaling for the numerical diagonalization result. We also obtain a contour map of the charge gap by the numerical diagonalization method on the U-V plain.
Keywords :D. electrical properties
D.phase transitions
Type Local :学術雑誌論文
Language :eng
Format :application/pdf
URI :http://hdl.handle.net/10191/26886
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/26886/1/1023.pdf
DOI :info:doi/10.1016/S0022-3697(02)00104-X
Appears in Collections:10 査読済論文 = Postprint

Please use this identifier to cite or link to this item: http://hdl.handle.net/10191/26886