Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlocal Transport and One-dimensional Conduction in the Axion Insulator
  State of MnBi2Te4   The intrinsic antiferromagnetic topological insulator MnBi2Te4 provides a
versatile platform for exploring exotic topological phenomena. In this work, we
report nonlocal transport studies of exfoliated MnBi2Te4 flakes with six and
seven septuple-layer thickness. We observe pronounced nonlocal transport
signals at low magnetic fields in six-septuple-layer device when the system is
in the axion insulator state. As a magnetic field drives it into the Chern
insulator phase, the nonlocal resistance almost vanishes due to the
dissipationless nature of the chiral edge state. However, in the
seven-septuple-layer device, we find the nonlocal signal is vanishingly small.
These results strongly suggest that the charge transport in the axion insulator
state is carried by a pair of counterpropagating one-dimensional conduction
channels that is susceptible to the opposite magnetization of the top and
bottom surfaces.

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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat