Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Two-Dimensional Character of the Magnetic Properties of Azurite
  Cu3(CO3)2(OH)2   The spin lattice appropriate for Azurite Cu3(CO3)2(OH)2 was determined by
evaluating its spin exchange interactions on the basis of first principles
density functional calculations. It is found that Azurite is not described by
an isolated diamond chain with no spin frustration, but by a two-dimensional
spin lattice in which diamond chains with spin frustration interact through the
interchain spin exchange in the ab-plane. Our analysis indicates that the
magnetic properties of Azurite at low temperatures can be approximated by two
independent contributions, i.e., an isolated dimer and an effective uniform
chain contributions. This prediction was verified by analyzing the magnetic
susceptibility and specific heat data of Azurite.

24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex