3.7k citations · 3.8k across the 5 of their papers we have counts for
5 papers
In situ growth of a type-II ZnO/ZnS heterostructure:From stability to band-offset
P. R. A de Oliveira, I. Coelho, G. Felix +2
We have successfully obtained a ZnO/ZnS heterostructure by heating a ZnS(001) single crystal in a controlled impurities-free oxygen atmosphere. Combining X-ray photoelectron spectr…
Formation mechanism, stability and role of zinc and sulfur vacancies on the electronic properties and optical response of ZnS
P. R. A de Oliveira, L. Lima, G. Felix +2
Combining experimental and theoretical tools, we report that Zn vacanciesplay an important role in the electronic and optical responses of ZnS sphalerite. The defective surface of…
Zinc blende ZnS (001) surface structure investigated by XPS,LEED and DFT
Pablo Oliveira, Corinne Arrouvel, Fernando Stavale
The formation and stability of a sulfur-rich surface of the zinc blende ZnS (001) single crystal have been examined by x-ray photoemission spectroscopy (XPS), low-energy electron d…
Compensation temperatures and exchange bias in La1.5Ca0.5CoIrO6
L. T. Coutrim, E. M. Bittar, F. Stavale +8
We report on the study of magnetic properties of the La1.5Ca0.5CoIrO6 double perovskite. Via ac magnetic susceptibility we have observed evidence of weak ferromagnetism and reentra…
Quantifying defects in graphene via Raman spectroscopy at different excitation energies
L. G. Cançado, A. Jorio, E. H. Martins Ferreira +7
We present a Raman study of Ar(+)-bombarded graphene samples with increasing ion doses. This allows us to have a controlled, increasing, amount of defects. We find that the ratio b…