Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mott switching and structural transition in the metal phase of $VO_2$
  nanodomain   $VO_2$ undergoes the insulator-metal transition (IMT) and monoclinic-rutile
structural phase transition (SPT) near $67^oC$. The IMT switching has many
applications. However, there is an unresolved issue whether the IMT is a Mott
transition or a Peierls transition. This complication is caused by metal and
insulator coexistence, which is an inherent property of the IMT region. Thus,
the acquired data in the IMT region are averaged over the two phases in many
experiments. We overcome the issue by probing the electronic state of the
monoclinic structure and by introducing a model that accounts for the
coexisting phases. We reveal the Mott IMT in the non-distorted monoclinic
nanodomain between $55-63^oC$, and the distortion-assisted SPT above $60^oC$.

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The categories of this paper are: hep-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc