Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature dependence of electrical resistivity of high-Tc cuprates -
  from pseudogap to overdoped regions   The effects of planar hole concentration, p, and in-plane disorder, Zn (y),
on the DC resistivity, r(T), of sintered samples of
Y_{1-x}Ca_xBa_2(Cu_{1-y}Zn_y)_3O_{7-d} were investigated over a wide doping
range by changing both the oxygen deficiency (d) and Ca content (x). From the
r(T,p) data we extracted characteristic crossover temperatures on the
underdoped and overdoped sides, T* and T_m respectively, above which r(T) is
linear. We compare our results with a number of other polycrystalline, thin
film and single crystal cuprate superconductors and find similar behavior in
the p-dependence of T*(p), T_m(p), and the resistivity exponent, m(p), in fits
to r(T) = r_0 + aT^m on the overdoped side. Our findings point towards the
possible existence of a quantum critical point (QCP) at the doping p=0.19 +/-
0.01.

18
The categories of this paper are: econ
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
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The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th