C. Batista

activity

19952026

most citedMagnetic Excitations in the Spin-1 Anisotropic Heisenberg Antiferromagnetic Chain System NiCl

_{2}

-4SC(NH

_{2}

)

_{2}

120 citations · 1.5k across the 42 of their papers we have counts for

collaborators

Showing cond-matShow all

4 papers · 1 filter

cond-mat1999★ 49 cited

Phase Diagrams from Topological Transitions: The Hubbard Chain with Correlated Hopping

A. A. Aligia, K. Hallberg, C. D. Batista +1

The quantum phase diagram of the Hubbard chain with correlated hopping is accurately determined through jumps in $π$ in the charge and spin Berry phases. The nature of each thermod…

cond-mat1998★ 14 cited

Magnetic Raman Scattering of Insulating Cuprates

J. M. Eroles, C. D. Batista, S. B. Bacci +1

We study the $B_{1 g}$ and $A_{1 g}$ Raman profiles of M $_{2}$ Cu $O_{4}$ (with M= La, Pr, Nd, Sm, Gd), Bi $_{2}$ Sr $_{2}$ Ca $_{0.5}$ Y $_{0.5}$ Cu $_{2}$ O $_{8 + y}$ %, YBa $_{2}$ Cu $_{3}$ O$_{6.2}…

cond-mat1998★ 23 cited

Electron-Doped Manganese Perovskites: The Polaronic State

C. D. Batista, J. M. Eroles, M. Avignon +1

Using the Lanczos method in linear chains we study the ground state of the double exchange model including an antiferromagnetic super-exchange in the low concentration limit. We fi…

cond-mat1997★ 44 cited

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…