Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unconventional superconductivity in YNi2B2C   We use the semi-classical (Doppler shift) approximation to calculate magnetic
field angle-dependent density of states and thermal conductivity kappa_zz for a
superconductor with a quasi-two-dimensional Fermi surface and line nodes along
k_x=0 and k_y=0. The results are shown to be in good quantitative agreement
with experimental results obtained for YNi2B2C.

33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics