Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structural and magnetic evidence of confined strain fields in GaMnAs
  grown on ordered arrays of zero-dimensional nanostructures   We prepared Ga0.95Mn0.05As films on top of periodic arrays of InAs quantum
dots. X-ray diffraction reveals periodically strained films, commensurate to
substrate's patterning. The dots produce a tensile strain in GaMnAs while
between the dots strain is compressive. Our experiments confirm that the
average tensile strain in the film increases with decreasing dots separation.
This trend in strain is accompanied by an increase of the out-of-plane
magnetization component familiar from the established relation between strain
and magnetic anisotropy in GaMnAs films. Our work provides a new route for
controlling magneto-crystalline anisotropies in GaMnAs on a nanometer scale.

26
The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin