Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible high-temperature superconductivity in multilayer graphane: can
  the cuprates be beaten?   We analyze a possible superconductivity in the hole-doped system of layered
hydrogenized graphene by taking into account thermal fluctuations of the order
parameter. In particular, we demonstrate that in the one-layer case the values
of the high mean-field (MF) critical temperature $T_{c}^{MF}\sim 80-90K$,
predicted recently by Savini et al \cite{Savini}, do not alter significantly
due to the fluctuations, and the Berezinskii-Kosterlitz-Thouless (BKT) critical
temperature of the vortex superconductivity is almost the same as the MF
temperature at doping 0.01-0.1. We show that in the case of multilayer system,
when the coupling between the layers stabilizes the superconducting phase in
the form of fluxon superconductivity, the critical temperature $T_{c}$ can
increase dramatically to the values $\sim 150K$, higher than the corresponding
values in cuprates under ambient pressure.

25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga