Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport properties around the metal-insulator transition for SrVO3
  ultrathin films fabricated by electrochemical etching   By using electrochemical etching, we fabricated conductive ultrathin SrVO3
(SVO) films that exhibited metallic behavior down to 3 monolayers (ML). From an
observed systematic change in transport properties with decreasing film
thickness, it was found that the disorder in the films remained nearly
unchanged during etching, and only the thickness was reduced. This is in
contrast to the insulating behavior found for as-deposited SVO ultrathin films.
For the etched films, the electron mobility at 200 K decreased with decreasing
film thickness below 10 ML, originating from an increased scattering rate and
electron effective mass near the metal-insulator transition. A slight upturn in
the resistivity and a positive magnetoresistance at low temperatures were
typically observed for the etched films down to 3 ML, which was explained by
weak anti-localization of electrons in a weakly disordered metal.

31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin