Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Normal Emission Study on Body-Centered-Cubic Ni   The first normal emission experiment result on bcc Ni ultrathin film is
presented in comparison with the one on fcc Ni. Its agreement with band
structure calculation, by supplementing our former results on the magnetic
properties of bcc Ni, verifies from the electronic viewpoint the successful
epitaxy of this metastable phase of Ni which doesn't exist in nature.

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The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th