Doped Stripes in Models for the Cuprates Emerging from the One-hole Properties of the Insulator

Details Doped Stripes in Models for the Cuprates Emerging from the One-hole Properties of the Insulator Doped Stripes in Models for the Cuprates Emerging from the One-hole Properties of the Insulator

2000-04-18

arxiv.org/abs/cond-mat/0004316v1

Phys Rev Lett 84, 5844 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, LateX, 4 figures, to appear on Phys. Rev. Lett

Scientific paper

The extended and standard t-J models are computationally studied on ladders and planes, with emphasis on the small J/t region. At couplings compatible with photoemission results for undoped cuprates, half-doped stripes separating $\pi$-shifted antiferromagnetic (AF) domains are found, as in Tranquada's interpretation of neutron experiments. Our main result is that the elementary stripe `"building-block" resembles the properties of $one$ hole at small J/t, with robust AF correlations across-the-hole induced by the local tendency of the charge to separate from the spin (G. Martins {\it et al.}, Phys. Rev. B{\bf 60}, R3716 (1999)). This suggests that the seed of half-doped stripes already exists in the unusual properties of the insulating parent compound.

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