Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crystal Phases of Charged Interlayer Excitons in van der Waals
  Heterostructures   Throughout the years, strongly correlated coherent states of excitons have
been the subject of intense theoretical and experimental studies. This topic
has recently boomed due to new emerging quantum materials such as van der Waals
(vdW) bound atomically thin layers of transition metal dichalcogenides (TMDs).
We analyze the collective properties of charged interlayer excitons observed
recently in bilayer TMD heterostructures. We predict new strongly correlated
phases - crystal and Wigner crystal - that can be selectively realized with TMD
bilayers of properly chosen electron-hole effective masses by just varying
their interlayer separation distance. Our results open up new avenues for
nonlinear coherent control, charge transport and spinoptronics applications
with quantum vdW heterostuctures.

14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con