Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unveiling the microscopic origin of the electronic smectic-nematic phase
  transition in La1/3Ca2/3MnO3   Electronic-liquid-crystal phases, in which part of the spatial symmetries are
broken spontaneously, are considered to play a vital role in interpreting the
structure-property relation in strongly-correlated materials. Although
electronic-liquid-crystal phases have been inferred in studies of a wide range
of materials, the nature of the transition between such phases has received
little experimental attention. Here we report the direct observation of an
electronic smectic-nematic phase transition in a doped manganite utilizing
transmission electron microscopic techniques. We show that, in this case, the
transition from the smectic to the nematic phase is driven by two mechanisms:
the proliferation of dislocations and the development of mesoscale charge
inhomogeneity. We observe the development of dislocation pairs within the
commensurate smectic phase on approaching the transition (at 210 +/- 10 K) from
below. Above the transition, the incommensurate nematic phase is accompanied by
mesoscopic electronic phase separation.

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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
2
The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ