Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coexistence of coupled magnetic phases in epitaxial TbMnO3 films
  revealed by ultrafast optical spectroscopy   Ultrafast optical pump-probe spectroscopy is used to reveal the coexistence
of coupled antiferromagnetic/ferroelectric and ferromagnetic orders in
multiferroic TbMnO3 films through their time domain signatures. Our
observations are explained by a theoretical model describing the coupling
between reservoirs with different magnetic properties. These results can guide
researchers in creating new kinds of multiferroic materials that combine
coupled ferromagnetic, antiferromagnetic and ferroelectric properties in one
compound.

20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin