Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low temperature Hall effect in bismuth chalcogenides thin films   Bismuth chalcogenides are the most studied 3D topological insulators. As a
rule, at low temperatures thin films of these materials demonstrate positive
magnetoresistance due to weak antilocalization. Weak antilocalization should
lead to resistivity decrease at low temperatures; in experiments, however,
resistivity grows as temperature decreases. From transport measurements for
several thin films (with various carrier density, thickness, and carrier
mobility), and by using purely phenomenological approach, with no microscopic
theory, we show that the low temperature growth of the resistivity is
accompanied by growth of the Hall coefficient, in agreement with diffusive
electron-electron interaction correction mechanism. Our data reasonably explain
the low-temperature resistivity upturn.

15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph