Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-field and low field magnetoresistance of CoFe nanoparticles
  elaborated by organometallic chemistry   We report on magnetotransport measurements on CoFe nanoparticles surrounded
by an insulating organic layer. Samples were obtained by evaporating a solution
of nanoparticles on a patterned substrate. Typical behaviour of Coulomb
blockade in array of nanoparticles is observed. High and low field
magnetoresistance have been evidenced. Below 10 K, a large high-field
magnetoresistance is measured, reaching up to 500 %. Its amplitude decreases
strongly with increasing voltage. At 1.6 K, this high-field magnetoresistance
vanishes and an inverse low field tunnelling magnetoresistance is observed.

31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th