Proximity-induced superconductivity in SnTe thin films
ORAL
Abstract
Superconducting topological crystalline insulators (TCIs) are theorized to host new types of topologically protected surface states distinct from those at the surface of superconducting Z2 topological insulators (TIs). While superconducting proximity effect has been widely used to induce superconductivity in Z2 TIs, the efforts to induce superconductivity in TCIs have been hindered by growth difficulties. Here we report the synthesis of heterostructures of a prototypical TCI SnTe(111) and high temperature superconductor Fe(Te,Se) using molecular beam epitaxy. Utilizing low-temperature scanning tunneling microscopy and spectroscopy as function of temperature and magnetic field, we show strong evidence of induced superconductivity at the surface of SnTe. Our work provides a new platform for studying emergent phenomena in superconducting TCIs.
*We gratefully acknowledge the support from the Army Research Office Grant No. W911NF-17-1-0399 and the NSF Grant No. 1654041
–
Presenters
-
Bryan Rachmilowitz
- Boston College