Geodesic
Static spin susceptibility in the $t$–$J$ model
Teoretičeskaâ i matematičeskaâ fizika, Tome 152 (2007) no. 3, pp. 538-550 Cet article a éte moissonné depuis la source Math-Net.Ru

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Based on the equation-of-motion method for the relaxation function expressed in terms of Hubbard operators, we evaluate the static spin susceptibility and correlation functions in the two-dimensional $t$–$J$ model. We show that at zero temperature, a long-range antiferromagnetic order exists in the lattice for the hole concentration $\delta<\delta_{\mathrm{c}}\simeq 0.018$. The calculated dependences of the spin susceptibility and correlation length on the temperature and hole concentration agree qualitatively with the experiment.
Keywords: strong electron correlation, spin susceptibility, high-temperature superconductivity, $t$–$J$ model. 
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     author = {A. A. Vladimirov and D. Ihle and N. M. Plakida},
     title = {Static spin susceptibility in the~$t${\textendash}$J$ model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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A. A. Vladimirov; D. Ihle; N. M. Plakida. Static spin susceptibility in the $t$–$J$ model. Teoretičeskaâ i matematičeskaâ fizika, Tome 152 (2007) no. 3, pp. 538-550. http://geodesic.mathdoc.fr/item/TMF_2007_152_3_a10/

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