Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conductance oscillations in metallic nanocontacts   We examine the conductance properties of a chain of Na atoms between two
metallic leads in the limit of low bias. Resonant states corresponding to the
conductance channel and the local charge neutrality condition cause conductance
oscillations as a function of the number of atoms in the chain. Moreover, the
geometrical shape of the contact leads influences the conductivity by giving
rise to additional oscillations as a function of the lead opening angle.

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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
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The categories of this paper are: eess