Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Engineering charge ordering into multiferroicity   Multiferroic materials have attracted great interests but are rare in nature.
In many transitional metal oxides, charge ordering and magnetic ordering
coexist, so that a method of engineering charge-ordered materials into
ferroelectric materials would lead to a large class of multiferroic materials.
We propose a strategy for designing new ferroelectric or even multiferroic
materials by inserting a spacing layer into each two layers of charge-ordered
materials and artificially making a superlattice. One example of the model
demonstrated here is the perovskite (LaFeO$_3$)$_2$/LaTiO$_3$ (111)
superlattice, in which the LaTiO$_3$ layer acts as the donor and the spacing
layer, and the LaFeO$_3$ layer is half doped and performs charge ordering. The
collaboration of the charge ordering and the spacing layer breaks the space
inversion symmetry, resulting in a large ferroelectric polarization. As the
charge ordering also leads to a ferrimagnetic structure, the
(LaFeO$_3$)$_2$/LaTiO$_3$ is multiferroic. It is expected that this work can
encourage the designing and experimentally implementation of a large class of
multiferroic structures with novel properties.

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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph