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Disorder-order evolution of InSb(110) studied by He scattering (Articolo in rivista)

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Disorder-order evolution of InSb(110) studied by He scattering (Articolo in rivista) (literal)

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D. Cvetko, L. Floreano, A. Morgante, M. Peloi and F. Tommasini (1994)
Disorder-order evolution of InSb(110) studied by He scattering
in Surface science; ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
(literal)

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[ 1 ] TASC, INFM LAB, PADRICIANO 99, I-34012 TRIESTE, ITALY. [ 2 ] UNIV LJUBLJANA, J STEFAN INST, 61000 LJUBLJANA, SLOVENIA [ 3 ] UNIV TRIESTE, DIPARTIMENTO FIS, TRIESTE, ITALY [ 4 ] UNIV TRENT, DIPARTIMENTO FIS, I-38050 TRENT, ITALY (literal)

Titolo

Abstract

The evolution of surface defects created by low energy ion bombardment on InSb(110) is studied by He beam scattering experiments. At surface temperatures above 500 K the ion erosion is found to proceed layer-by-layer without changing the stoichiometric composition of the surface. This indicates that the nucleation of surface islands driven by vacancy diffusion is faster than the ion erosion. After different doses of Ar+ ion bombardment, the surface is left in a non-equilibrium state whose time evolution is monitored by measuring the profiles of the He diffraction peaks. It is seen that the coalescence of islands proceeds with anisotropic island size distributions. (literal)

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