First principles electronic model for high-temperature superconductivity

V. I. Anisimov, M. A. Korotin, I. A. Nekrasov, Z. V. Pchelkina, S. Sorella

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Using the structural data of the La2Cu4 compound both in the distorted low-temperature tetragonal phase and in the isotropic phase, we have, derived an effective t-J model with hoppings t and superexchange interactions J extended up to the fourth- and second-nearest-neighbors, respectively. By numerically studying this Hamiltonian we have then reproduced the main experimental features of this high-temperature superconductivity compound: d-wave superconductivity is stabilized at small but finite doping δ≳6% away from the antiferromagnetic region and some evidence of dynamical stripes is found at commensurate filling 1/8.

Original languageEnglish
Article number100502
Pages (from-to)1005021-1005024
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number10
DOIs
Publication statusPublished - 1 Sep 2002
Externally publishedYes

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