INTEC 05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Surface characterization of self-assembled N-Cu nanostructures
Autor/es:
LUCILA J. CRISTINA; JUAN C. MORENO-LÓPEZ; SILVANO J. SFERCO; MARIO C.G. PASSEGGI (JR.); RICARDO A. VIDAL; JULIO FERRÓN
Lugar:
Beijing
Reunión:
Congreso; IVC-18, 18th International Vacuum Congress; 2010
Resumen:
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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 K < 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.
