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cond-mat.mtrl-sci2007★ 5 cited
Energy of bond defects in quantum spin chains obtained from local approximations and from exact diagonalization
V. L. Libero, K. Capelle, F. C. Souza +1
We study the influence of ferromagnetic and antiferromagnetic bond defects on the ground-state energy of antiferromagnetic spin chains. In the absence of translational invariance,…
cond-mat.mtrl-sci2005★ 6 cited
Construction of model dielectric constants for two and three dimensional electron liquids from density functionals
A. P. Favaro, Joao Vitor Batista Ferreira, K. Capelle
The Thomas-Fermi (TF) approximation for the static dielectric constant of a three-dimensional electron liquid can be derived from minimizing the TF local-density approximation for…