Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of Anisotropic Hopping Transport due to Spiral Correlations in
  the Spin-Glass Phase of Underdoped Cuprates   We study the in-plane resistivity anisotropy in the spin-glass phase of the
high-$T_{c}$ cuprates, on the basis of holes moving in a spiral spin
background. This picture follows from analysis of the extended $t-J$ model with
Coulomb impurities. In the variable-range hopping regime the resistivity
anisotropy is found to have a maximum value of around 90%, and it decreases
with temperature, in excellent agreement with experiments in
La$_{2-x}$Sr$_x$CuO$_4$. In our approach the transport anisotropy is due to the
non-collinearity of the spiral spin state, rather than an intrinsic tendency of
the charges to self-organize.

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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
1
The categories of this paper are: cs
2
The categories of this paper are: math