Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical role of two-dimensional island-mediated growth on the formation
  of semiconductor heterointerfaces   We experimentally demonstrate a sigmoidal variation of the composition
profile across semiconductor heterointerfaces. The wide range of material
systems (III-arsenides, III-antimonides, III-V quaternary compounds,
III-nitrides) exhibiting such a profile suggests a universal behavior. We show
that sigmoidal profiles emerge from a simple model of cooperative growth
mediated by two-dimensional island formation, wherein cooperative effects are
described by a specific functional dependence of the sticking coefficient on
the surface coverage. Experimental results confirm that, except in the very
early stages, island growth prevails over nucleation as the mechanism governing
the interface development and ultimately determines the sigmoidal shape of the
chemical profile in these two-dimensional grown layers. In agreement with our
experimental findings, the model also predicts a minimum value of the
interfacial width, with the minimum attainable value depending on the chemical
identity of the species.

11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th