期刊
JETP LETTERS
卷 98, 期 3, 页码 150-155出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364013160054
关键词
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资金
- Dynasty Foundation
- Division of Physical Sciences and Ural Branch, Russian Academy of Sciences [12-T-2-1001, 12-T-3-1001]
- Presidium of the Russian Academy of Sciences [12-P-2-1041, 12-U-2-1021]
- Russian Foundation for Basic Research [11-02-00931-a, 11-02-00937-a, 12-02-00632-a, 12-02-31520-mol-a]
The formation of the spiral magnetic order in the ground state of the Hubbard model for a square lattice has been studied within the slave-boson method in a wide range of the parameters of the carrier density and Coulomb interaction. Next-nearest-neighbor electron hopping, as well as the magnetic phase separation, has been taken into account. It has been shown that the electron correlations lead to the suppression of the ferromagnetic and spiral phases in comparison with the Hartree-Fock approximation. The application of the results to the explanation of the experimental data, in particular, to the description of the magnetic state of the high-temperature superconductors of the cuprate-based systems has been discussed.
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