Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterisation of Ferromagnetic Contacts to Carbon Nanotubes   We present an investigation of different thin-film evaporated ferromagnetic
materials for their suitability as electrodes in individual single-wall and
multi-wall carbon nanotube-based spin devices. Various electrode shapes made
from permalloy (Ni_{81}Fe_{19}), the diluted ferromagnet PdFe, and PdFe/Fe
bilayers are studied for both their micromagnetic properties and their contact
formation to carbon nanotubes. Suitable devices are tested in low-temperature
electron transport measurements, displaying the typical tunneling
magnetoresistance of carbon nanotube pseudo spin valves.

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The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
1
The categories of this paper are: cs
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The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph