Article ID Journal Published Year Pages File Type
5426416 Surface Science 2006 5 Pages PDF
Abstract

We present our investigation on the early stage of the photon induced desorption of oxide nanostructures grown on GaAs/AlAs/GaAs heterostructures. The oxide structures were fabricated by local anodic oxidation performed by means of an atomic force microscope. We observed that after a first rapid evolution in which a thick layer of heterogeneous material is removed, the oxide composition remains almost constant. These results support our model in which the oxidation process on a layered material resembles a melting process and produces a mixed material whose composition is the average of the initial one.

Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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