First Principle Electronic Model for High-Temperature Superconductivity
超导电性
2009-11-07 v1 强关联电子
摘要
Using the structural data of the La2CuO4 compound both in the 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 fourth and second neareast neighbors respectively. By numerically studying this hamiltonian we have then reproduced the main experimental features of this HTc compound: d-wave superconductivity is stabilized at small but finite doping delta>6% away from the antiferromagnetic region and some evidence of dynamical stripes is found at commensurate filling 1/8.
引用
@article{arxiv.cond-mat/0203117,
title = {First Principle Electronic Model for High-Temperature Superconductivity},
author = {V. I. Anisimov and M. A. Korotin and I. A. Nekrasov and Z. V. Pchelkina and S. Sorella},
journal= {arXiv preprint arXiv:cond-mat/0203117},
year = {2009}
}
备注
4 pages including 4 figures and 2 tables