Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proximity-Induced Superconductivity in Scalable Topological
  Insulator/Graphene/Gallium Heterostructures   The introduction of superconductivity to the Dirac surface states of a
topological insulator leads to a novel state of matter known as a topological
superconductor. A topological superconductor may host Majorana zero modes, the
braiding of which is a cornerstone operation of a topological qubit3. The
development of a scalable material platform is key to the realization of
topological quantum computing. Here we report on the growth and properties of
high-quality (Bi,Sb)2Te3/graphene/gallium heterostructures. Our novel synthetic
approach enables atomically sharp layers at both hetero-interfaces, which in
turn promotes proximity-induced superconductivity that originates in the
gallium film. A lithography-free, van der Waals tunnel junction is developed to
perform transport tunneling spectroscopy. Our results show a robust,
proximity-induced superconducting gap formed in the Dirac surface states in
5-10 quintuple-layer (Bi,Sb)2Te3/graphene/gallium heterostructures. The motion
of a single Abrikosov vortex, where the Majorana zero modes are expected to
reside, manifests in discrete conductance changes. The epitaxial thin-film
(Bi,Sb)2Te3/graphene/gallium platform opens up new avenues for understanding
topological superconductivity and realizing Majorana braiding circuitry.

36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin