Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunable Berry Curvature Through Magnetic Phase Competition in a
  Topological Kagome Magnet   Magnetic topological phases of quantum matter are an emerging frontier in
physics and material science. Along these lines, several kagome magnets have
appeared as the most promising platforms. However, the magnetic nature of these
materials in the presence of topological state remains an unsolved issue. Here,
we explore magnetic correlations in the kagome magnet Co_3Sn_2S_2. Using muon
spin-rotation, we present evidence for competing magnetic orders in the kagome
lattice of this compound. Our results show that while the sample exhibits an
out-of-plane ferromagnetic ground state, an in-plane antiferromagnetic state
appears at temperatures above 90 K, eventually attaining a volume fraction of
80% around 170 K, before reaching a non-magnetic state. Strikingly, the
reduction of the anomalous Hall conductivity above 90 K linearly follows the
disappearance of the volume fraction of the ferromagnetic state. We further
show that the competition of these magnetic phases is tunable through applying
either an external magnetic field or hydrostatic pressure. Our results taken
together suggest the thermal and quantum tuning of Berry curvature field via
external tuning of magnetic order. Our study shows that Co_3Sn_2S_2 is a rare
example where the magnetic competition drives the thermodynamic evolution of
the Berry curvature field, thus tuning its topological state.

15
The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: stat