Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Realization of Flat Band with Possible Nontrivial Topology in Electronic
  Kagome Lattice   The energy dispersion of fermions or bosons vanishes in momentum space if
destructive quantum interference occurs in a frustrated Kagome lattice with
only nearest-neighbour (NN) hopping. A discrete flat band (FB) without any
dispersion is consequently formed, promising emergence of fractional quantum
Hall states (FQHS) at high temperatures. Here, we report experimental
realization of a FB with possible nontrivial topology in an electronic Kagome
lattice on a twisted multilayer silicene. The electrons are localized in the
Kagome lattice due to quantum destructive interference, and thus, their kinetic
energy is quenched, which gives rise to a FB peak in density of states. A
robust and pronounced one-dimensional edge state has been revealed at Kagome
edge, which resides at higher energy than the FB. Our observations of the FB
and the exotic edge state in electronic Kagome lattice open up the possibility
towards the realization of fractional Chern insulators in two-dimensional
materials.

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The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
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The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn