2002/03/06 by V. I. Anisimov, В. И. Анисимов, M. A. Korotin +4 · 38 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Doping #Electronic structure #Hamiltonian (control theory) #High-temperature superconductivity #Hubbard model #Isotropy #Magnetic and transport properties of perovskites and related materials #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #Superexchange #Tetragonal crystal system #cond-mat.str-el #cond-mat.supr-con #t-J model
paper · pdf · doi:10.1103/physrevb.66.100502
published in Physical review. B, Condensed matter 66(10) (American Physical Society) · 4 pages including 4 figures and 2 tables
arxiv created 2002/03/06 · openalex publication_date 2002/09/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Using the structural data of the La2CuO4 compound both in the distorted low-temperature tetragonal phase and in the isotropic phase, we have derived an effective t\ensuremath-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 \ensuremathδ\ensuremath\gtrsim6% away from the antiferromagnetic region and some evidence of dynamical stripes is found at commensurate filling 1/8.