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cond-mat.str-el2001
Density response of the t-J model and renormalization of breathing and half-breathing phonon modes: A slave-fermion calculation
P. Horsch, G. Khaliullin, V. Oudovenko
The density fluctuation spectrum is calculated for the t-J model in the low-doping regime using a slave-fermion method for the constrained fermions. The obtained res…
cond-mat.str-el2001
Density response of cuprates and renormalization of breathing phonons
P. Horsch, G. Khaliullin
We analyse the dynamical density fluctuation spectra for cuprates starting from the model in a slave-boson 1/N representation. The results obtained are consistent with diagon…
cond-mat.str-el2001
Coulomb interaction and stability of CE-type structure in half-doped manganites, reply
Jeroen van den Brink, Giniyat Khaliullin, Daniel Khomskii
In his Comment (cond-mat/0104353), Shen points out that the on-site Coulomb interaction, that can cause charge order in half-doped manganites, also destabilizes the magnetic CE-pha…