Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-symmorphic band degeneracy at the Fermi level in ZrSiTe   Non-symmorphic materials have recently been predicted to exhibit many
different exotic features in their electronic structures. These originate from
forced band degeneracies caused by the non-symmorphic symmetry, which not only
creates the possibility to realize Dirac semimetals, but also recently resulted
in the prediction of novel quasiparticles beyond the usual Dirac, Weyl or
Majorana fermions, which can only exist in the solid state. Experimental
realization of non-symmorphic materials that have the Fermi level located at
the degenerate point is difficult, however, due to the requirement of an odd
band filling. In order to investigate the effect of forced band degeneracies on
the transport behavior, a material that has such a degeneracy at or close to
the Fermi level is desired. Here, we show with angular resolved photoemission
experiments supported by density functional calculations, that ZrSiTe hosts
several fourfold degenerate Dirac crossings at the X point, resulting from
non-symmorphic symmetry. These crossings form a Dirac line node along XR, which
is located almost directly at the Fermi level and shows almost no dispersion in
energy. ZrSiTe is thus the first real material that allows for transport
measurements investigating Dirac fermions that originate from non-symmorphic
symmetry.

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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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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: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin