One-dimensional magnetic chains in sub-monolayer CrTe₂ grown on NbSe₂

Magnetic/superconducting heterostructures have attracted significant attention due to their potential to host topological superconductivity and Majorana zero modes. In this study, we report the epitaxial growth of CrTe₂ ultrathin films on NbSe₂ substrates through molecular beam epitaxy (MBE). Structural characterization revealed an initial epitaxial stabilization of a compressed Cr-Te layer, with subsequent annealing inducing a periodic stress-relief reconstruction that exhibits controllable nanoscale periodicity. Scanning tunneling spectroscopy (STS) measurements unveiled edge-localized magnetic moments. This system provides a novel platform for constructing one-dimensional magnetic chains through strainmodulated self-assembly, while simultaneously offering an atomically precise interface between magnatic and superconducting orders. Our findings advance the prospects for designing the heterostructures in topological quantum devices.