Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhancement of the superconducting critical temperature of Sr2CuO3+d up
  to 95K by ordering dopant atoms   We address the question of whether the superconducting transition temperature
(Tc) of high-Tc cuprates is enhanced when randomly distributed dopant atoms
form an ordered array in the charge reservoir layers. This study is possible
for the Sr2CuO3+d superconductor with K2NiF4-type structure in which oxygen
atoms only partially occupy the apical sites next to the CuO2 planes and act as
hole-dopants. We show that remarkable Tc enhancement up to 95K in this mono
CuO2 layered HTS is associated with the apical oxygen ordering, not to the hole
concentration change. The result points a route toward further enhancement of
Tc in cuprate superconductors.

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The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: eess
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph