Quantum Monte Carlo simulations of the t-Jz model with stripes on the square lattice

Details Quantum Monte Carlo simulations of the t-Jz model with stripes on the square lattice Quantum Monte Carlo simulations of the t-Jz model with stripes on the square lattice

2001-04-06

arxiv.org/abs/cond-mat/0104122v2

Phys. Rev. B 64, 104520 (2001)

Physics

Condensed Matter

Superconductivity

final version to be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.64.104520

Finite temperature quantum Monte Carlo simulations are performed on the anisotropic t-J model and in particular on its Ising limit. Straight site-centered stripes are imposed by an on-site potential representing external mechanisms of stripe formation. In this model, we show that, even though charge inhomogeneity exists at a high temperature, the anti-phase ordering of the spin domains between stripes occurs at a much lower temperature. The magnetic correlations at this spin ordering crossover are analyzed. The stripes show metallicity, with absence of hole attraction. Comparison between this model and others that have been proposed to explain or describe stripes, as well as possible relations with experimental features on underdoped cuprates are discussed.

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