Abstract
The formation of on-site charge-density waves (CDWs) in the one-dimensional (1D) Hubbard chain is studied by path-integral quantum Monte Carlo (QMC) simulations as a function of the band filling, the ratio between on-site and nearest-neighbor intersite interaction as well as the net Coulomb interaction and kinetic hopping. The dynamics of the electrons of the 1D system are quantified by the charge fluctuations 〈(Δ n 2 i )〉 and the probability of double occupancy P(2) averaged over all lattice sites i. Electronic conditions favouring CDWs are summarized. It is shown that one quarter, one half and three quarter filled bands are optimum conditions for on-site CDWs.
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