  Recently, the search for Majorana fermions has become one of the most
prominent subjects in condensed matter physics. This search involves
explorations of new materials and hence offers interesting opportunities for
chemistry. Theoretically, Majorana fermions may reside in various types of
topological superconductor materials, and superconducting Sn_{1-x}In_{x}Te,
which is a doped topological crystalline insulator, is one of the promising
candidates to harbor Majorana fermions. Here, we report the first successful
growth of superconducting Sn_{1-x}In_{x}Te nanoplates on Si substrates by a
simple vapor transport method without employing any catalyst. We observed
robust superconducting transitions in those nanoplates after device fabrication
and found that the relation between the critical temperature and the carrier
density is consistent with that of bulk single crystals, suggesting that the
superconducting properties of the nanoplate devices are essentially the same as
those of bulk crystals. With the help of nanofabrication, those nanoplates
would prove useful for elucidating the potentially topological nature of
superconductivity in Sn_{1-x}In_{x}Te to harbor Majorana fermions and thereby
contribute to the future quantum technologies.
