Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In-Chain Tunneling Through Charge-Density Wave Nanoconstrictions and
  Break-Junctions   We have fabricated longitudinal nanoconstrictions in the charge-density wave
conductor (CDW) NbSe$_{3}$ using a focused ion beam and using a mechanically
controlled break-junction technique. Conductance peaks are observed below the
T$_{P1}$$=145 $K and T$_{P2}$$=59 $K CDW transitions, which correspond closely
with previous values of the full CDW gaps $2\Delta_{1}$ and $2\Delta_{2}$
obtained from photo-emission. These results can be explained by assuming
CDW-CDW tunneling in the presence of an energy gap corrugation $\epsilon_{2}$
comparable to $\Delta_{2}$, which eliminates expected peak at
$\Delta_{1}+\Delta_{2}$. The nanometer length-scales our experiments imply
indicate that an alternative explanation based on tunneling through
back-to-back CDW-normal junctions is unlikely.

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The categories of this paper are: bayes-an
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
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The categories of this paper are: funct-an