Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of Resistivity Upturns in Metallic Cuprates   We propose that the experimentally observed resistivity upturn of cuprates at
low temperatures may be explained by properly accounting for the effects of
disorder in a strongly correlated metallic host. Within a calculation of the DC
conductivity using real-space diagonalization of a Hubbard model treated in an
inhomogeneous unrestricted Hartree-Fock approximation, we find that
correlations induce magnetic droplets around impurities, and give rise to
additional magnetic scattering which causes the resistivity upturn. A pseudogap
in the density of states is shown to enhance both the disorder-induced magnetic
state and the resistivity upturns.

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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: math-ph