Phase diagram of the half-filled one-dimensional t-V-V' model

Details Phase diagram of the half-filled one-dimensional t-V-V' model Phase diagram of the half-filled one-dimensional t-V-V' model

2011-08-10

arxiv.org/abs/1108.2272v2

Phys. Rev. B 84, 115135 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 9 figures

Scientific paper

10.1103/PhysRevB.84.115135

We study the phase diagram of spinless fermions with nearest and next-nearest-neighbor interactions in one dimension utilizing the (finite-size) density-matrix renormalization group (DMRG) method. The competition between nearest and next-nearest-neighbor interactions and nearest-neighbor hopping generates four phases in this model: two charge-density-wave insulators, a Luttinger liquid phase, and a bond-order phase. We use finite-size scaling of the gap and various structure factors to determine the phase diagram.

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