Geodesic
The ground state of a weakly doped narrow-band Hubbard magnet
Teoretičeskaâ i matematičeskaâ fizika, Tome 105 (1995) no. 2, pp. 311-323 Cet article a éte moissonné depuis la source Math-Net.Ru

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The thermodynamics of a low-doped narrow-band Hubbard magnetic material is described in the framework of a consistent perturbation theory using the diagram technique of the $t$–$J$ model. Possible magnetic structures are investigated. Up to the linear approximation in the hole concentration, it is shown that the ground state of the electrons is ferromagnetic. 
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     author = {E. E. Zubov},
     title = {The ground state of a weakly doped narrow-band {Hubbard} magnet},
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E. E. Zubov. The ground state of a weakly doped narrow-band Hubbard magnet. Teoretičeskaâ i matematičeskaâ fizika, Tome 105 (1995) no. 2, pp. 311-323. http://geodesic.mathdoc.fr/item/TMF_1995_105_2_a9/

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