Role of rotational symmetry in magnetism of multiband models |
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| Authors: | A. E. Antipov M. S. Aleinikov V. I. Anisimov |
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| Affiliation: | 1.Faculty of Physics,Moscow State University,Moscow,Russia;2.Institute of Metal Physics, Ural Branch,Russian Academy of Sciences,Yekaterinburg,Russia |
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| Abstract: | The role of the complete Coulomb interaction matrix in the determination of the magnetic susceptibility of the two-band Hubbard model has been investigated in the dynamical mean-field theory. The off-diagonal component of the U-matrix has been found to reduce the Néel temperature, which agrees with the available experimental data. The magnitude of the effect upon a change in the dimension of the U-matrix is discussed. The results have been compared with the thermodynamic characteristics of an isolated Hubbard atom. |
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