Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Cu NQR Study of the Stripe Phase Local Structure in the Lanthanum
  Cuprates   Using Cu NQR in Eu-doped La_{2- x}Sr_xCuO_4 we show the evidence of the
pinned stripe phase for moderate doping at 1.3K. The pinned fraction increases
by one order of magnitude near hole doping x=1/8. The NQR lineshape reveals
three inequivalent Cu positions: i) sites in the charged stripe; ii)
nonmagnetic sites outside the stripes; iii) sites with a magnetic moment of
0.29 Bohr magnethon in the AF correlated regions. A dramatic change of the NQR
signal for x > 0.18 correlating with the onset of bulk superconductivity
corresponds to the depinning of the stripe phase. .

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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat