Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An ab-initio investigation of magnetism in two-dimensional uranium
  systems   The orbital and spin magnetic moments, and the X-ray-magnetic
circular-dichroism (XMCD) spectra at the $M_{4,5}$ edges of the U atoms in a
UAs/Co multilayer and in an $\alpha$-U film are calculated within the framework
of the density-functional theory in combination with the local-spin-density
approximation (LSDA), the generalized-gradient approximation (GGA) and the
LDA+$U$ method. The antiparallel arrangement between the U and Co spin magnetic
moments at the interface results in the vanishing of ferromagnetism for the
case of very thin Co layers. The U moments decay rapidly with the distance from
the film surface. The magnitude of the magnetic-dipole term $<T_z>$, which
appears in the spin XMCD sum rule, is small. The different exchange-correlation
treatments do not yield qualitatively different results.

33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg