120 citations · 1.5k across the 42 of their papers we have counts for
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Specific Heat of defects in the Haldane System Y_2BaNiO_5
K. Hallberg, C. D. Batista, A. A. Aligia
We calculate the specific heat of the antiferromagnetic spin-1 chain compound Y_2BaNi_{1-x}Zn_xO_5 in the presence of a magnetic field. The low-energy spectrum of a Heisenberg Hami…
Charge and spin excitations of insulating lamellar copper oxides
F. Lema, J. Eroles, C. D. Batista +1
A consistent description of low-energy charge and spin responses of the insulating Sr_2CuO_2Cl_2 lamellar system is found in the framework of a one-band Hubbard model which besides…
Superconductivity and incommensurate spin fluctuations in a generalized t-J model for the cuprates
C. D. Batista, L. O. Manuel, H. A. Ceccatto +1
We consider the slave-fermion Schwinger-boson decomposition of an effective model obtained through a systematic low-energy reduction of the three-band Hubbard Hamiltonian. The mode…