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Interface-Enhanced Superconductivity in Ultrathin TiN Proximitized by Topological Insulators

Renjie Xie1, Bowen Hao2, Min Ge3

  • 1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.

ACS Nano
|March 5, 2026
PubMed
Summary

We discovered interface-enhanced superconductivity in topological insulator-superconductor (TI-SC) heterostructures. Interfacial charge transfer boosts critical temperature (Tc) in ultrathin superconducting (SC) films.

Keywords:
charge transferinterface engineeringinterface-enhanced superconductivitytopological insulator−superconductorultrathin TiN

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