Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photoresponse of La$_{1.85}$Sr$_{0.15}$CuO$_{4}$ nanostrip   We report the fabrication and photoresponse of 5 nm thick
La$_{1.85}$Sr$_{0.15}$CuO$_{4}$ nanostrip with a width of 100nm. The I-V
characteristics of the nanostrip show a hysteresis and a sharp voltage jump at
$I_{c}$. The $J_{c}$(3K) of the nanostrip is 2.3 x 10$^{7}$ A/cm$^{2}$. The
nanostrip exhibits photoresponse signals when illuminated by a pulse laser at
1560 nm wavelength with a bias current just below $I_{c}$. The height of the
signal reduces as the optical intensity decreases and disappears below -10 dBm.
The signal also decreases as the temperature increases, but it exists up to 30
K. These results suggest the possibility of La$_{1.85}$Sr$_{0.15}$CuO$_{4}$
nanostrip as single-photon detector (SSPD, SNSPD) working at high temperature
by further reducing the cross-section of the strip.

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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: cs
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The categories of this paper are: math