Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective quantum pseudospin-1/2 model for Yb pyrochlore oxides   An effective quantum pseudospin-1/2 Hamiltonian for Yb_2TM_2O_7 (TM = Ti and
Sn) is obtained in terms of the atomic Kramers ground doublet of the LS
coupling and the crystalline electric field, which is almost described with
J^z=\pm 1/2. It is calculated microscopically as the sum of Anderson's
superexchange interaction and the magnetic dipole interaction. It is found that
it shows a strong exchange anisotropy.

17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph