Peierls transition in the two-dimensional doped large-U Hubbard model
β Scribed by S.S. Wu; L. Hu; Z.R. Ji; K.W. Yu
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 268 KB
- Volume
- 144
- Category
- Article
- ISSN
- 0375-9601
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π SIMILAR VOLUMES
The two-dimensional Hubbard model is studied by means of the composite operator approach. In a generalized mean-field approximation we calculate local quantities, as the double occupancy and the magnetic moment, for various values of the particle density, repulsive Coulomb interaction and temperatur
Magnon Raman spectra in the half-filled two-dimensional Hubbard model are calculated by using the exact diagonalization of a X/-8 x v'-8 lattice. Theoretical results of the peak positions and relative intensities of the B~, A~ and B 2 spectra agree with the observed ones. The frequency dependence of