Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous Hall Effect in Bismuth   We report the occurrence of ferromagnetic-like anomalous Hall effect (AHE)
below $30$ mT in bismuth single and policrystals. The signatures of
ferromagnetism in transport are not corroborated in magnetization measurements,
thus suggesting the induction of non-intrinsic magnetism at surfaces and grain
boundaries in bismuth. The suppression of the AHE with the increase of magnetic
field and temperature coincides with previous reports of superconductivity in
Bi, suggesting an interplay between the two phenomena.

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The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn