Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Aharonov-Bohm magnetism and Landau diamagnetism in semimetals   We compute the magnetic response of hollow semimetal cylinders and rings to
the presence of an axial Aharonov-Bohm magnetic flux, in the absence of
interactions. We predict nullification of the Aharonov-Bohm effect for a class
of dispersion laws that includes "non-relativistic" dispersion and demonstrate
that at zero flux the ground-state of a very short "armchair" graphene tube
will exhibit a ferromagnetic broken symmetry. We also compute the diamagnetic
response of bulk semimetals to the presence of a uniform magnetic field,
specifically predicting that the susceptibility has a logarithmic dependence on
the size of the sample.

31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas