Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral Majorana Fermion Modes on the Surface of Superconducting
  Topological Insulators   The surface of superconducting topological insulators (STIs) has been
recognized as an effective $p\pm ip$ superconductivity platform for realizing
elusive Majorana fermions. Chiral Majorana modes (CMMs), which are different
from Majorana bound states localized at points, can be achieved readily in
experiments by depositing a ferromagnetic overlayer on top of the STI surface.
Here we simulate this heterostructure by employing a realistic tight-binding
model and show that the CMM appears on the edge of the ferromagnetic islands
only after the superconducting gap is inverted by the exchange coupling between
the ferromagnet and the STI. In addition, multiple CMMs can be generated by
tuning the chemical potential of the topological insulator. These results can
be applied to both proximity-effect induced superconductivity in topological
insulators and intrinsic STI compounds such as PbTaSe$_2$, BiPd and their
chemical analogues, providing a route to engineering CMMs in those materials.

10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int