Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-dependent Schottky barriers and vacancy-induced spin-selective
  Ohmic contacts in magnetic vdW heterostructures   The 2D ferromagnets, such as CrX3 (X=Cl, Br and I), have been attracting
extensive attentions since they provide novel platforms to fundamental physics
and device applications. Integrating CrX3 with other electrodes and substrates
is an essential step to their device realization. Therefore, it is important to
understand the interfacial properties between CrX3 and other 2D materials. As
an illustrative example, we have investigated the heterostructures between CrX3
and graphene (CrX3/Gr) from firstprinciples. We find unique Schottky contacts
type with strongly spin-dependent barriers in CrX3/Gr. This can be understood
by synergistic effects between the exchange splitting of semiconductor band of
CrX3 and interlayer charge transfer. The spinasymmetry of Schottky barriers may
result in different tunneling rates of spin-up and down electrons, and then
lead to spin-polarized current, namely spin-filter (SF) effect. Moreover, by
introducing X vacancy into CrX3/Gr, an Ohmic contact forms in spin-up
direction. It may enhance the transport of spin-up electrons, and improve SF
effect. Our systematic study reveals the unique interfacial properties of
CrX3/Gr, and provides a theoretical view to the understanding and designing of
spintronics device based on magnetic vdW heterostructures.

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The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
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The categories of this paper are: stat
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
7
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: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn