Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The anisotropic ultrahigh hole mobility in strain-engineering
  two-dimensional penta-SiC$_2$   Using the first-principles calculations based on density functional theory,
we systematically investigate the strain-engineering (tensile and compressive
strain) electronic, mechanical and transport properties of monolayer
penta-SiC$_2$. By applying an in-plane tensile or compressive strain, it is
easy to modulate the electronic band structure of monolayer penta-SiC$_2$,
which subsequently changes the effective mass of carriers. Furthermore, the
obtained electronic properties are predicted to change from indirectly
semiconducting to metallic. More interestingly, at room temperature, uniaxial
strain can enhance the hole mobility of penta-SiC$_2$ along a particular
direction by almost three order in magnitude, $i.e.$ from 2.59 $\times10^3
cm^2/V s$ to 1.14 $\times10^6 cm^2/V s$ (larger than the carrier mobility of
graphene, 3.5 $\times10^5 cm^2/V s$), with little influence on the electron
mobility. The high carrier mobility of monolayer penta-SiC$_2$ may lead to many
potential applications in high-performance electronic and optoelectronic
devices

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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat