Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Model for spin coupling disorder effects on the susceptibility of
  antiferromagnetic nanochains   The temperature dependence of the static magnetic susceptibility of
exchange-disordered antiferromagnetic Heisenberg spin-1/2 finite chains with an
odd number of spins is investigated as a function of size and type of disorder
in the exchange coupling. Two models for the exchange disorder distribution are
considered. At sufficiently low temperatures each chain behaves like an
isolated spin-1/2 particle. As the size of the chains increases, this analogy
is lost and the chains evolve into the thermodynamic limit behavior. The
present study provides a simple criterion, based on susceptibility
measurements, to establish when odd-sized chains effectively simulate a single
spin-1/2 particle.

34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga