Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical signatures of states bound to vacancy defects in monolayer
  MoS$_2$   We show that pristine MoS$_2$ single layer (SL) exhibits two bandgaps
$E_{g\parallel}=1.9$ eV and $E_{g\perp}=3.2$ eV for the optical in-plane and
out-of-plane susceptibilities $\chi_\parallel$ and $\chi_\perp$, respectively.
In particular, we show that odd states bound to vacancy defects (VDs) lead to
resonances in $\chi_\perp$ inside $E_{g\perp}$ in MoS$_2$ SL with VDs. We use
density functional theory, the tight-binding model, and the Dirac equation to
study MoS$_2$ SL with three types of VDs: (i) Mo-vacancy, (ii) S$_2$-vacancy,
and (iii) 3$\times$MoS$_2$ quantum antidot. The resulting optical spectra
identify and characterize the VDs.

6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int