Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metallic Diluted Dimerization in VO2 Tweeds   The observation of electronic phase separation textures in vanadium dioxide
(VO2), a prototypical electron-correlated oxide, has recently added new
perspectives on the long standing debate about its metal-insulator transition
and its applications. Yet, the lack of atomically-resolved information on
phases accompanying such complex patterns still hinders a comprehensive
understanding of the transition and its implementation in practical devices. In
this work, atomic resolution imaging and spectroscopy unveils the existence of
ferroelastic tweed structures on ~5 nm length scales, well below the resolution
limit of currently employed spectroscopic imaging techniques. Moreover, density
functional theory calculations show that such fine tweeds are formed by a
metallic structure, formed by partially dimerized V-chains, that appears
tetragonal (rutile) on average, but is locally monoclinic. These observations
suggest that the metal/insulator coexistence among low-symmetry forms of VO2 is
driven by lattice degrees of freedom, and provide a multiscale perspective for
the interpretation of existing data, whereby phase coexistence and structural
intermixing can occur all the way down to the atomic scale.

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The categories of this paper are: hep-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas