Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Half-metallicity in honeycomb-kagome-lattice Mg3C2 monolayer with
  carrier doping   To obtain high-performance spintronic devices with high integration density,
two-dimensional (2D) half-metallic materials are eagerly pursued all along.
Here, we propose a stable 2D material with a honeycomb-kagome lattice, i.e.,
the Mg3C2 monolayer, based on first-principles calculations. This monolayer is
an anti-ferromagnetic (AFM) semiconductor at its ground state. We further
demonstrate that a transition from AFM semiconductor to ferromagnetic
half-metal in this 2D material can be induced by carrier (electron or hole)
doping. This magnetic transition can be understood by the Stoner criterion. In
addition, the half-metallicity arises from the 2pz orbitals of the carbon (C)
atoms for the electron-doped system, but from the C 2px and 2py orbitals for
the case of hole doping. Our findings highlight a new promising material with
controllable magnetic and electronic properties toward 2D spintronic
applications.

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The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int