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-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 deltagreater than or similar to6% away from the antiferromagnetic region and some evidence of dynamical stripes is found at commensurate filling 1/8.

First principles electronic model for high-temperature superconductivity / Anisimov, Vi; Korotin, Ma; Nekrasov, Ia; Pchelkina, Zv; Sorella, Sandro. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 66:10(2002), pp. 1-4. [10.1103/PhysRevB.66.100502]

First principles electronic model for high-temperature superconductivity

Sorella, Sandro
2002-01-01

Abstract

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-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 deltagreater than or similar to6% away from the antiferromagnetic region and some evidence of dynamical stripes is found at commensurate filling 1/8.
2002
66
10
1
4
100502(
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.66.100502
https://arxiv.org/abs/cond-mat/0203117
Anisimov, Vi; Korotin, Ma; Nekrasov, Ia; Pchelkina, Zv; Sorella, Sandro
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/12586
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