Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metal-organic Frameworks: Possible New Two-Dimensional Magnetic and
  Topological materials   Finding new two-dimensional (2D) materials with novel quantum properties is
highly desirable for technological innovations. In this work, we studied a
series of metal-organic frameworks (MOFs) with different metal cores and
discovered various attractive properties, such as room-temperature magnetic
ordering, strong perpendicular magnetic anisotropy, huge topological band gap
(>200meV), and excellent spin-filtering performance. As many MOFs have been
successfully synthesized in experiments, our results suggest realistic new 2D
functional materials for the design of spintronic nanodevices.

5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
18
The categories of this paper are: econ
1
The categories of this paper are: cs