Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fingerprints of the Strong Interaction between Monolayer MoS2 and Gold   Gold-mediated exfoliation of MoS2 has attracted considerable interest in the
recent years. A strong interaction between MoS2 and Au facilitates preferential
production of centimeter-sized monolayer MoS2 with near-unity yield and
provides a heterostructure system noteworthy from a fundamental standpoint.
However, little is known about the detailed nature of the MoS2-Au interaction
and its evolution with the MoS2 thickness. Here, we identify specific
vibrational and binding energy fingerprints of such strong interaction using
Raman and X-ray photoelectron spectroscopy, which indicate substantial strain
and charge-transfer in monolayer MoS2. Near-field tip-enhanced Raman
spectroscopy reveals heterogeneity of the MoS2-Au interaction at the nanoscale,
reflecting the spatial non-conformity between the two materials. Far-field
micro-Raman spectroscopy shows that this interaction is strongly affected by
the roughness and cleanliness of the underlying Au. Our results elucidate the
nature of the strong MoS2-Au interaction and provide guidance for strain and
charge doping engineering of MoS2.

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
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph