First principle computation of stripes in cuprates

V. I. Anisimov; M. A. Korotin; A. S. Mylnikova; A. V. Kozhevnikov; J. Lorenzana

doi:10.1103/PhysRevB.70.172501

First principle computation of stripes in cuprates

Strongly Correlated Electrons 2007-05-23 v1 Materials Science Superconductivity

Authors: V. I. Anisimov , M. A. Korotin , A. S. Mylnikova , A. V. Kozhevnikov , J. Lorenzana

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Abstract

We present a first principle computation of vertical stripes in $La_{15/8}Sr_{1/8}CuO_4$ within the LDA+U method. We find that Cu centered stripes are unstable toward O centered stripes. The metallic core of the stripe is quite wide and shows reduced magnetic moments with suppressed antiferromagnetic (AF) interactions. The system can be pictured as alternating metallic and AF two-leg ladders the latter with strong AF interaction and a large spin gap. The Fermi surface shows warping due to interstripe hybridization. The periodicity and amplitude of the warping is in good agreement with angle resolved photoemission experiment. We discuss the connection with low-energy theories of the cuprates.

Keywords

first principle computation stripes cuprates LDA+U method Fermi surface warping

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@article{arxiv.cond-mat/0402162,
  title  = {First principle computation of stripes in cuprates},
  author = {V. I. Anisimov and M. A. Korotin and A. S. Mylnikova and A. V. Kozhevnikov and J. Lorenzana},
  journal= {arXiv preprint arXiv:cond-mat/0402162},
  year   = {2007}
}

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5 pages,4 figures

First principle computation of stripes in cuprates

Abstract

Keywords

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