Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strain driven migration of In during the growth of InAs/GaAs quantum
  posts   Using the mechano-optical stress sensor technique, we observe a
counter-intuitive reduction of the compressive stress when InAs is deposited on
GaAs (001) during growth of quantum posts. Through modelling of the strain
fields, we find that such anomalous behaviour can be related to the
strain-driven detachment of In atoms from the crystal and their surface
diffusion towards the self-assembled nanostructures.

14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin