Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic Proximity Effect and Interlayer Exchange Coupling of
  Ferromagnetic/Topological Insulator/Ferromagnetic Trilayer   Magnetic proximity effect between topological insulator (TI) and
ferromagnetic insulator (FMI) is considered to have great potential in
spintronics. However, a complete determination of interfacial magnetic
structure has been highly challenging. We theoretically investigate the
interlayer exchange coupling of two FMIs separated by a TI thin film, and show
that the particular electronic states of the TI contributing to the proximity
effect can be directly identified through the coupling behavior between two
FMIs, together with a tunability of coupling constant. Such FMI/TI/FMI
structure not only serves as a platform to clarify the magnetic structure of
FMI/TI interface, but also provides insights into designing the magnetic
storage devices with ultrafast response.

22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
2
The categories of this paper are: math
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an