INVESTIGADORES
PASSEGGI mario Cesar Guillermo
congresos y reuniones científicas
Título:
Surface characterization of self assembled N-Cu nanostructures
Autor/es:
CRISTINA, L.J.; MORENO-LÓPEZ, J.C.; PASSEGGI (JR.), M.C.G.; SFERCO, S.J.; VIDAL, R.A.; FERRÓN, J.
Lugar:
Beijing, China, 23-27 August
Reunión:
Conferencia; IVC-18 / ICN+T2010 / ICSS-14 / VASSCAA-5, International Vacuum Congress, International Conference on Nanoscience and Technology, 14th International Conference on Surfaces Science and Vacuum and Surface Sciences Conference of Asia and Australia; 2010
Institución organizadora:
Chinese Vacuum Society (CVS)
Resumen:
We report on the process of low energy N2+ implantation and annealing of a Cu(001) surface. Through AES we study the N diffusion features as a function of the substrate temperature. With STM and LEIS we characterize the surface morphology and the electronic structure is analyzed with ARUPS. Under annealing (500 < T < 700 K) N migrates to the surface and reacts forming a CuxN compound that decomposes at temperatures above 700 K. LEIS measurements show that N locates on the four-fold hollow sites of the Cu(001) surface in a c(2×2) arrangement. Finally, gaps along different azimuthal directions are determined by ARUPS. DFT calculations provide support to our conclusions.