Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large linear magnetoresistance in the Dirac semimetal TlBiSSe   The mixed-chalcogenide compound TlBiSSe realizes a three-dimensional (3D)
Dirac semimetal state. In clean, low-carrier-density single crystals of this
material, we found Shubnikov-de Haas oscillations to signify its 3D Dirac
nature. Moreover, we observed very large linear magnetoresistance (MR)
approaching 10,000% in 14 T at 1.8 K, which diminishes rapidly above 30 K. Our
analysis of the magnetotransport data points to the possibility that the linear
MR is fundamentally governed by the Hall field; although such a situation has
been predicted for highly-inhomogeneous systems, inhomogeneity does not seem to
play an important role in TlBiSSe. Hence, the mechanism of large linear MR is
an intriguing open question in a clean 3D Dirac system.

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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin