Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible superconducting fluctuation and pseudogap state above $T_c$ in
  CsFe$_2$As$_2$   Resistive, magnetization, torque, specific heat and scanning tunneling
microscopy measurements are carried out on the hole heavily doped
CsFe$_2$As$_2$ single crystals. A characteristic temperature $T^*\sim13$ K,
which is several times higher than the superconducting transition temperature
$T_c=2.15$ K, is observed and possibly related to the superconducting
fluctuation or the pseudogap state. A diamagnetic signal detected by torque
measurements starts from the superconducting state, keeps finite and vanishes
gradually until a temperature near $T^*$. Temperature dependent resistivity and
specific heat also show kinks near $T^*$. An asymmetric gap-like feature with
the energy of 8.4 meV and a symmetric superconducting related gap of 2.2 meV on
the scanning tunneling spectra are detected, and these pseudogap-related
features disappear at temperatures up to at least 9 K. These observations by
different experimental tools suggest the possible existence of superconducting
fluctuation or pseudogap state in the temperature range up to 4 - 6 times of
$T_c$ in CsFe$_2$As$_2$.

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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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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: acc-phys
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The categories of this paper are: solv-int