Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigation of fundamental and higher harmonic AC magnetic
  susceptibility of FeSe0.5Te0.5 Superconductor   We present the complex harmonic magnetic susceptibilities of the FeSeTe
polycrystalline superconducting sample. The ac magnetic susceptibility is
measured as a function of various external perturbations such as temperature,
the AC magnetic field amplitude, frequency, and the magnitude of DC bias field.
The in phase and out of phase components of the fundamental and third harmonics
of ac susceptibility are found to vary as a function of the AC drive field. The
imaginary part of third harmonics shows two peaks as a function of frequency,
one negative in magnitude and another is positive. The negative peak shifts
towards the lower temperature and positive peak is shifted towards the higher
temperature as we increase the frequency. To better understand the AC magnetic
response under the influence of various perturbations, we have analyzed the
polar plot of the complex ac susceptibility for both the harmonics. Our
analysis suggests that the studied sample is in vortex glass state,
characterized by a collective flux creep state within Beans model and the Kim
Anderson model is ruled out.

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The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph