Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Visualization of Local Conductance in MoS2/WSe2 Heterostructure
  Transistors   The vertical stacking of van der Waals (vdW) materials introduces a new
degree of freedom to the research of two-dimensional (2D) systems. The
interlayer coupling strongly influences the band structure of the
heterostructures, resulting in novel properties that can be utilized for
electronic and optoelectronic applications. Based on microwave microscopy
studies, we report quantitative electrical imaging on gated molybdenum
disulfide (MoS2)/tungsten diselenide (WSe2) heterostructure devices, which
exhibit an intriguing anti-ambipolar effect in the transfer characteristics.
Interestingly, in the region with significant source-drain current, electrons
in the n-type MoS2 and holes in the p-type WSe2 segments are nearly balanced,
whereas the heterostructure area is depleted of mobile charges. The
configuration is analogous to the p-i-n diode, where the injected carriers
dominate in the recombination current. The spatial evolution of local
conductance can be ascribed to the lateral band bending and formation of
depletion regions along the line of MoS2-heterostructure-WSe2. Our work vividly
demonstrates the microscopic origin of novel transport behaviors, which is
important for the vibrant field of vdW heterojunction research.

15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph