Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kondo Effect and Spin Glass Behavior of Dilute Iron Clusters in Silver
  Studied by M\"{o}ssbauer Spectroscopy and Resistivity   Thin films of silver containing 0.3 - 1.5 at % Fe have been prepared by vapor
co-deposition. Depending on substrate temperature and iron concentration we
could systematically follow the formation of nanometer size clusters of iron
from initially dilute iron monomers. samples were characterized via X-ray
diffraction, resistivity and M\"{o}ssbauer spectroscopic measurements. The
magnetic behavior derived from M\"{o}ssbauer data can be best described with an
ensemble of ferromagnetic mono-domain particles. The magnetic freezing observed
at low temperatures, is controlled via the inter-particle interactions mediated
via conduction electron polarization, i.e. RKKY interaction. The interaction of
the cluster magnetic moments with the conduction electron sea is best
quantified by the electrical resistivity data. For all studied concentrations
we find a non-monotonic variation with temperature which can be understood by
competing shielding of the cluster moments by conduction electron spin
scattering due to Kondo effect and the magnetic coupling.

22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol