Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Domain Formation and Orbital Ordering Transition in a Doped Jahn-Teller
  Insulator   The ground state of a double-exchange model for orbitally degenerate $e_g$
electrons with Jahn-Teller lattice coupling and weak disorder is found to be
spatially inhomogeneous near half filling. Using a real space Monte-Carlo
method we show that doping the half-filled orbitally ordered insulator leads to
the appearance of hole-rich disordered regions in an orbitally ordered
environment. The doping driven orbital order to disorder transition is
accompanied by the emergence of metallic behavior. We present results on
transport and optical properties along with spatial patterns for lattice
distortions and charge densities, providing a basis for an overall
understanding of the low doping phase diagram of La$_{1-x}$Ca$_x$MnO$_3$.

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The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
16
The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
23
The categories of this paper are: solv-int