Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing the evolution of electronic phase-coexistence in complex systems
  by terahertz radiation   In complex oxides, the electrons under the influence of competing energetics
are the cornerstone of coexistence (or phase-separation) of two or more
electronic/magnetic phases in same structural configuration. Probing of growth
and evolution of such phase-coexistence state is crucial to determine the
correct mechanism of related phase-transition. Here, we demonstrate the
combination of terahertz (THz) time-domain spectroscopy and DC transport as a
novel strategy to probe the electronic phase-coexistence. This is demonstrated
in disorder controlled phase-separated rare-earth nickelate thin films which
exhibit metal-insulator transition in dc conductivity at around 180 K but lack
this transition in terahertz (THz) dynamics conductivity down to low
temperature. Such pronounced disparity exploits two extreme attributes: i)
enormous sensitivity of THz radiation to a spatial range of its
wavelength-compatible electronic inhomogeneities and ii) insensitivity to a
range beyond the size of its wavelength. This feature is generic in nature
(sans a photo-induced effect), depends solely on the size of
insulating/metallic clusters and formulates a methodology with unique
sensitivity to investigate electronic phase-coexistence and phase transition of
any material system.

11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
19
The categories of this paper are: eess