Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Triangular Spin-Orbit-Coupled Lattice with Strong Coulomb Correlations:
  Sn Atoms on a SiC(0001) Substrate   Two-dimensional (2D) atom lattices provide model setups for Coulomb
correlations inducing competing ground states, partly with topological
character. Hexagonal SiC(0001) is an intriguing wide-gap substrate,
spectroscopically separated from the overlayer and hence reduced screening. We
report the first study of an artificial high-Z atom lattice on SiC(0001) by Sn
adatoms, based on combined experimental realization and theoretical modeling.
Density-functional theory of our $\sqrt{3}$-structure model closely reproduces
the scanning tunneling microscopy. Instead of metallic behavior, photoemission
data show a deeply gapped state (~2 eV gap). Based on our calculations
including dynamic mean-field theory, we argue that this reflects a pronounced
Mott insulating scenario. We also find indications that the system is
susceptible to antiferromagnetic superstructures. Such spin-orbit-coupled
correlated heavy atom lattices on SiC(0001) thus form a novel testbed for
peculiar quantum states of matter, with potential bearing for spin liquids and
topological Mott insulators.

21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex