  The search for topological superconductors which support Majorana fermion
excitations has been an important topic in condensed matter physics. In this
work, we propose a new experimental scheme for engineering topological
superconductors. In this scheme, by manipulating the superlattice structure of
organic molecules placed on top of a superconductor with Rashba spin-orbit
coupling, topological superconducting phases can be achieved without
fine-tuning the chemical potential. Moreover, superconductors with different
Chern numbers can be obtained by changing the superlattice structure of the
organic molecules.
