Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite Temperature Behavior in the Second Landau Level of the
  Two-dimensional Electron Gas   Reports of weak local minima in the magnetoresistance at $\nu=2+3/5$,
$2+3/7$, $2+4/9$, $2+5/9$, $2+5/7$, and $2+5/8$ in the second Landau level of
the electron gas in GaAs/AlGaAs left open the possibility of fractional quantum
Hall states at these filling factors. In a high quality sample we found that
the magnetoresistance exhibits peculiar features near these filling factors of
interest. These features, however, cannot be associated with fractional quantum
Hall states; instead they originate from magnetoresistive fingerprints of the
electronic bubble phases. We found only two exceptions: at $\nu=2+2/7$ and
$2+5/7$ there is evidence for incipient fractional quantum Hall states at
intermediate temperatures. As the temperature is lowered, these fractional
quantum Hall states collapse due to a phase competition with bubble phases.

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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: physics
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas