Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical Control of Carriers Spin Orientation in FeVTiSi Heusler Alloy   The direct control of carriers spin by electric field under room temperature
is one of the most important challenges in the field of spintronics. For this
purpose, we here propose a quaternary Heusler alloy FeVTiSi. Based on first
principles calculations, FeVTiSi alloy is found to be an intrinsic bipolar
magnetic semiconductor in which the valence band and conduction band approach
the Fermi level through opposite spin channels. Thus FeVTiSi alloy can conduct
completely spin-polarized currents with tunable spin-polarization direction
simply by applying a gate voltage. Furthermore, by Monte Carlo simulations
based on the classical Heisenberg Hamiltonian, the Curie temperature of FeVTiSi
alloy is predicted to be as high as 1293 K, far above the room temperature. The
bipolar magnetic semiconducting character and the high Curie temperature endow
the FeVTiSi alloy great potentials in developing electrically controllable
spintronic devices working at room temperature.

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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom