Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic order parameter in Li-intercalated layered superconductor
  Li$_x$ZrNCl   In this study, it is shown that in a layered nitride superconductor, i.e.,
LixZrNCl (0.07<=x<=0.21), the superconducting order parameter is highly
anisotropic in a sample with x=0.12, as inferred from both the temperature and
the magnetic field dependences of the muon depolarization rate (sigma_s,
proportional to the superfluid density). Moreover, the tendency of strong
anisotropy with an increase in x is indicated by the T dependence of sigma_s.
These observations are in good agreement with the recent theory that predicts
the development of anisotropy in a d+id' gap upon carrier filling to the bands
with disconnected Fermi surfaces on a honeycomb lattice.

35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys