Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cooperative photoinduced metastable phase control in strained manganite
  films   A major challenge in condensed matter physics is active control of quantum
phases. Dynamic control with pulsed electromagnetic fields can overcome
energetic barriers enabling access to transient or metastable states that are
not thermally accessible. Here we demonstrate strain-engineered tuning of
La2/3Ca1/3MnO3 into an emergent charge-ordered insulating phase with extreme
photo-susceptibility where even a single optical pulse can initiate a
transition to a long-lived metastable hidden metallic phase. Comprehensive
single-shot pulsed excitation measurements demonstrate that the transition is
cooperative and ultrafast, requiring a critical absorbed photon density to
activate local charge excitations that mediate magnetic-lattice coupling that,
in turn, stabilize the metallic phase. These results reveal that strain
engineering can tune emergent functionality towards proximal macroscopic states
to enable dynamic ultrafast optical phase switching and control.

24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph