Induced superconductivity in semiconducting 2D Te

Superconductor and semiconductor hybrid devices emerge as an important system for the research on exotic physics phenomena and the realization of quantum computing. Superconductor to semiconductor interface is essential for the performance of a hybrid device. Here, we report a new route to induce superconductivity into semiconductors by “intimate contact” in Tellurium (Te) based material system. Te is a narrow bandgap semiconductor with a unique chiral crystal structure. The 2D Te single crystal is synthesized using a solution process. After the deposition of Pd electrodes, PdTe superconductor is formed. Supercurrent with gate tunability is observed in PdTe-Te-PdTe hybrid devices which can be used as functional superconducting transistors. Our work provides an alternative way to induce superconductivity into non-superconducting materials.