2 papers
cond-mat.mtrl-sci2003
On the nature of ferromagnetism in Ga_{1-x}Mn_xAs semiconductors
A. J. R. da Silva, A. Fazzio, R. R. dos Santos +1
We have performed ab initio calculations within the density-functional theory for Ga_{1-x}Mn_xAs diluted semiconductors. Total energy results unambiguously show that a quasi-locali…
cond-mat.supr-con2002
Superconductivity Induced by Negative Centers
G. Litak, T. Paiva, R. T. Scalettar +2
We study the effect of random dilution of attraction centers on electron pairing in a generalization of the negative Hubbard model where the interaction , defined on the t…