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cond-mat.str-el2002★ 54 cited
Competing phases in the extended U-V-J Hubbard model near the van Hove fillings
A. P. Kampf, A. A. Katanin
The phase diagram of the two-dimensional extended one-band U-V-J Hubbard model is considered within a mean-field approximation and two- and many-patch renormalization group (RG) ap…
cond-mat.str-el2002★ 30 cited
Theoretical analysis of magnetic Raman scattering in La2CuO4: two-magnon intensity with the inclusion of ring exchange
A. A. Katanin, A. P. Kampf
We evaluate the Raman light scattering intensity for the square lattice Heisenberg antiferromagnet with plaquette ring exchange J_\Box. With the exchange couplings as fixed before…
cond-mat.str-el2002★ 54 cited
Competing phases in the extended U-V-J Hubbard model near the van Hove fillings: 2-patch approach
A. P. Kampf, A. A. Katanin
The paper is replaced by the extended version, cond-mat/0212190