Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling

Details Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling

2004-11-05

arxiv.org/abs/cond-mat/0411151v2

Phys. Rev. B, 72, 033101 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures, sumitted to PRB

Scientific paper

10.1103/PhysRevB.72.033101

We examine the ground-state properties of the one-dimensional Hubbard model at quarter filling with Coulomb interactions between nearest-neighbors $V_1$ and next-nearest neighbors $V_2$. Using the density-matrix renormalization group and exact diagonalization methods, we obtain an accurate ground-state phase diagram in the $V_1$-$V_2$ plane with three different phases: $2k_{\rm F}$- and $4k_{\rm F}$-charge-density-wave and a broad metallic phase in-between. The metal is a Tomonaga-Luttinger-liquid whose critical exponent $K_{\rho}$ is largest around $V_1=2V_2$, where $V_1$ and $V_2$ are frustrated, and smallest, $K_{\rho}=0.25$, at the boundaries between the metallic phase and each of the two ordered phases.

Affiliated with

Also associated with

No associations

Rating

Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-497926