Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction of Intrinsic Triferroicity in Two-Dimensional Lattice   Intrinsic triferroicity is essential and highly sought for novel device
applications, such as high-density multistate data storage. So far, the
intrinsic triferroicity has only been discussed in three-dimensional systems.
Herein on basis of first-principles, we report the intrinsic triferroicity in
two-dimensional lattice. Being exfoliatable from the layered bulk, single-layer
FeO2H is shown to be an intrinsically triferroic semiconductor, presenting
antiferromagnetism, ferroelasticity and ferroelectricity simultaneously.
Moreover, the directional control of its ferroelectric polarization is
achievable by 90{\deg} reversible ferroelastic switching. In addition,
single-layer FeO2H is identified to harbor in-plane piezoelectric effect. The
unveiled phenomena and mechanism of triferroics in this two-dimensional system
not only broaden the scientific and technological impact of triferroics but
also enable a wide range of nanodevice applications.

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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ