Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strain dependence of antiferromagnetic interface coupling in
  La0.7Sr0.3MnO3/SrRuO3 superlattices   We have investigated the magnetic response of La0.7Sr0.3MnO3/SrRuO3
superlattices to biaxial in-plane strain applied in-situ. Superlattices grown
on piezoelectric substrates of 0.72PbMg1/3Nb2/3O3-0.28PbTiO3(001) (PMN-PT) show
strong antiferromagnetic coupling of the two ferromagnetic components. The
coupling field of mu0HAF = 2.8 T is found to decrease by deltaHAF/delta epsilon
~ -520 mT %-1 under reversible biaxial strain mu0HAF at 80 K in a
[La0.7Sr0.3MnO3(22)/SrRuO3(55)]15 superlattice. This reveals a significant
strain effect on interfacial coupling. The applied in-plane compression
enhances the ferromagnetic order in the manganite layers which are under
as-grown tensile strain. It is thus difficult to disentangle the contributions
from strain-dependent antiferromagnetic Mn-O-Ru interface coupling and Mn-O-Mn
ferromagnetic double exchange near the interface, since the enhanced magnetic
order of Mn spins leads to a larger net coupling of SrRuO3 layers at the
interface. Strain-dependent orbital occupation in a single-ion picture cannot
explain the sign of the observed strain dependence, whereas the enhanced Mn
order at the interface is qualitatively in line with it.

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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
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The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: math
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The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol