Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Doping evolution of the optical scattering rate and effective mass of
  Bi(2)Sr(2-x)La(x)CuO(6)   We determined the optical conductivity of Bi(2)Sr(2-x)La(x)CuO(6) at dopings
covering the phase diagram from the underdoped to the overdoped regimes. The
frequency dependent scattering rate shows a pseudogap extending into the
overdoped regime. We found that the effective mass enhancement calculated from
the optical conductivity is constant throughout the phase diagram. Conversely,
the effective optical charge density varies almost linearly with doping. Our
results suggest that the low frequency electrodynamics of
Bi(2)Sr(2-x)La(x)CuO(6) is not strongly affected by the long range Mott
transition.

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The categories of this paper are: stat
3
The categories of this paper are: physics
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
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The categories of this paper are: eess
6
The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin