Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A DFT study on the electronic and magnetic properties of triangular
  graphene antidot lattices   We explore the effect of antidot size on electronic and magnetic properties
of graphene antidot lattices from first-principles calculations. The
spin-polarized density of states, band gap, formation energy and the total
magnetization of two different equilateral triangular and right triangular
antidots with zigzag and mixed zigzag-armchair edges are studied. We find that
although the values of band gap, formation energy and the total magnetization
of both structures are different, these values may increase when the number of
zigzag edges is increased. The armchair edges have no contribution in the total
magnetization of right triangular antidots. The induced magnetic moments are
mainly localized on the edge atoms with a maximum value at the center of each
side of the triangles. We show that a spin-dependent band gap opens up in
bilayer graphene as a result of antidot pattern in only one layer of the
structure. Such periodic arrays of triangular antidots that cause a
spin-dependent band gap around the Fermi energy can be utilized for turning
graphene from a diamagnetic semimetal into a magnetic semiconductor.

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The categories of this paper are: econ
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The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org