Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Long-distance spin-transport across the Morin phase transition up to
  room temperature in ultra-low damping single crystals of the antiferromagnet
  {\alpha}-Fe2O3   Antiferromagnetic materials can host spin-waves with polarizations ranging
from circular to linear depending on their magnetic anisotropies. Until now,
only easy-axis anisotropy antiferromagnets with circularly polarized spin-waves
were reported to carry spin-information over long distances of micrometers. In
this article, we report long-distance spin-transport in the easy-plane canted
antiferromagnetic phase of hematite and at room temperature, where the linearly
polarized magnons are not intuitively expected to carry spin. We demonstrate
that the spin-transport signal decreases continuously through the easy-axis to
easy-plane Morin transition, and persists in the easy-plane phase through
current induced pairs of linearly polarized magnons with dephasing lengths in
the micrometer range. We explain the long transport distance as a result of the
low magnetic damping, which we measure to be below 0.0001 as in the best
ferromagnets. All of this together demonstrates that long-distance transport
can be achieved across a range of anisotropies and temperatures, up to room
temperature, highlighting the promising potential of this insulating
antiferromagnet for magnon-based devices.

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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: eess