Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gap function of hexagonal pnictide superconductor SrPtAs from
  quasiparticle interference spectrum   The pnictide superconductor SrPtAs has a hexagonal layered structure
containing inversion symmetry. It is formed by stacking two inequivalent PtAs
layers separated by Sr layers. The former have no local (in-plane) inversion
symmetry and therefore a (layer-) staggered Rashba spin orbit coupling appears
which splits the three Kramers degenerate bands into six quasi-2D bands. The
symmetry of the superconducting state of SrPtAs is unknown. Three candidates,
spin-singlet $A_{1g}$ and $E_g$ as well as triplet $A_{2u}$ states have been
proposed. We predict the quasiparticle interference (QPI) spectrum for these
gap functions in t-matrix Born approximation. We show that distinct differences
in the pattern of characteristic QPI wave vectors appear. These results may be
important to determine the gap symmetry of SrPtAs by STM-QPI method.

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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
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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: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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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: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: math
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The categories of this paper are: stat