Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electronic structure induced reconstruction and magnetic ordering at the
  LaAlO$_3|$SrTiO$_3$ interface   Using local density approximation (LDA) calculations we predict
GdFeO$_3$-like rotation of TiO$_6$ octahedra at the $n$-type interface between
LaAlO$_3$ and SrTiO$_3$. The narrowing of the Ti $d$ bandwidth which results
means that for very modest values of $U$, LDA$+U$ calculations predict charge
and spin ordering at the interface. Recent experimental evidence for magnetic
interface ordering may be understood in terms of the close proximity of an
antiferromagnetic insulating ground state to a ferromagnetic metallic excited
state.

28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph