Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigation of Gd3N@C2n (40 < n < 44) family by Raman and inelastic
  electron tunneling spectroscopy   The structure and vibrational spectrum of Gd3N@C80 is studied through Raman
and inelastic electron tunneling spectroscopy (IETS) as well as density
functional theory (DFT) and universal force field (UFF) calculations. Hindered
rotations, shown by both theory and experiment, indicate the formation of a
Gd3N-C80 bond which reduces the ideal icosahedral symmetry of the C80 cage. The
vibrational modes involving the movement of the encapsulated species are a
fingerprint of the interaction between the fullerene cage and the core complex.
We present Raman data for the Gd3N@C2n (40 < n < 44) family as well as Y3N@C80,
Lu3N@C80, and Y3N@C88 for comparison. Conductance measurements have been
performed on Gd3N@C80 and reveal a Kondo effect similar to that observed in
C60.

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The categories of this paper are: astro-ph
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol