Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron correlations and charge density wave in the topological kagome
  metal FeGe   Charge order in kagome metals is of extensive current interest. Recently, a
charge density wave was discovered in the magnetic binary kagome metal FeGe. In
analogy to its predecessor, the non-magnetic $A$V$_3$Sb$_5$ ($A$=K, Cs, Rb),
the in-plane ordering occurs at the $M$ point. In contrast, however, the system
manifestly shows effects of substantial correlations. Here we identify the
topological bands crossing the Fermi energy (E$_F$) in FeGe and characterize
the correlation-induced renormalization of these bands. We then derive a charge
order from an effective model comprising topological kagome `flat' bands in the
presence of a magnetic order. We demonstrate edge states as well as excess
out-of-plane magnetic moment associated with the charge order; both are
fingerprints of non-trivial band topology and consistent with recent
experimental observations. Our results point to FeGe as an ideal platform to
realize and elucidate correlated topological physics.

16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom