Strongly Compressed Few-Layered SnSe Films Grown on a SrTiO Substrate: The Coexistence of Charge Ordering and Enhanced Interfacial Superconductivity.

High pressure has been demonstrated to be a powerful approach of producing novel condensed-matter states, particularly in tuning the superconducting transition temperature () of the superconductivity in a clean fashion without involving the complexity of chemical doping. However, the challenge of high-pressure experiment hinders further in-depth research for underlying mechanisms. Here, we have successfully synthesized continuous layer-controllable SnSe films on SrTiO substrate using molecular beam epitaxy.

Layer-Stacking, Defects, and Robust Superconductivity on the Mo-Terminated Surface of Ultrathin MoC Flakes Grown by CVD.

Materials can exhibit exotic properties when they approach the two-dimensional (2D) limit. Because of promising applications in catalysis and energy storage, 2D transition-metal carbides (TMCs) have attracted considerable attention in recent years. Among these TMCs, ultrathin crystalline α-MoC flakes have been fabricated by chemical vapor deposition on Cu/Mo bilayer foils, and their 2D superconducting property was revealed by transport measurements.

Epitaxial Growth of PbSe Few-Layers on SrTiO: The Effect of Compressive Strain and Potential Two-Dimensional Topological Crystalline Insulator.

The freestanding PbSe monolayer has been predicted as a candidate of the two-dimensional topological crystalline insulator, which possesses the Dirac-cone-like edge states resided at the edge. Up to now, however, direct experimental evidence of topological PbSe monolayer has not yet been reported. Here, we report the epitaxial growth and scanning tunneling microscopy study of few-layers PbSe islands grown on SrTiO substrate.

Scanning tunneling microscopic observation of enhanced superconductivity in epitaxial Sn islands grown on SrTiO substrate.

Recent experimental and theoretical studies of single-layer FeSe film grown on SrTiO have revealed interface enhanced superconductivity, which opens up a pathway to promote the superconducting transition temperature. Here, to investigate the role of SrTiO substrate in epitaxial superconducting film, we grew a conventional superconductor β-Sn (bulk T ∼ 3.72 K) onto SrTiO substrate by molecular beam epitaxy.