Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence of a photoinduced non-thermal superconducting-to-normal-state
  phase transition in overdoped
  Bi$_{2}$Sr$_{2}$Ca$_{0.92}$Y$_{0.08}$Cu$_{2}$O$_{8+\delta}$   Here we report extensive ultrafast time-resolved reflectivity experiments on
overdoped Bi$_{2}$Sr$_{2}$Ca$_{1-x}$Y$_x$Cu$_{2}$O$_{8+\delta}$ single crystals
(T$_C$=78 K) aimed to clarify the nature of the superconducting-to-normal-state
photoinduced phase transition. The experimental data show the lack of the
quasiparticles decay time divergence at the fluence required to induce this
phase transition, in contrast to the thermally-driven phase transition observed
at T$_C$ and at variance with recently reported photoinduced
charge-density-wave and spin-density-wave to metal phase transitions. Our data
demonstrate the non-thermal character of the superconducting-to-normal-state
photoinduced phase transition. The data have been analyzed using an ad-hoc
developed time-dependent Rothwarf-Taylor model, opening the question on the
order of this non-equilibrium phase transition.

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The categories of this paper are: atom-ph
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas