Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic Landau level splitting and Lifshitz transition induced
  magnetoresistance enhancement in ZrTe5 crystals   Magneto-transport study has been performed in ZrTe5 single crystals. The
observed Shubnikov-de Hass quantum oscillation at low temperature clearly
demonstrates the existence of a nontrivial band with small effective mass in
ZrTe5. Furthermore, we also revealed the 3D anisotropic nature of high-field
Landau level splitting in ZrTe5, very different from the 2D behavior measured
in previous transport studies. Besides these, an abnormal large enhancement of
magnetoresistance appears at high temperatures, which is believed to arise from
the Lifshitz transition induced two-carrier transport in ZrTe5. Our study
provides more understanding of the physical properties of ZrTe5 and sheds light
on potential application of ZrTe5 in spintronics.

6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat