Superconductivity and suppressed monoclinic distortion in FeTe films enabled by higher-order epitaxy.

ABSTRACT: Molecular beam epitaxy enables the growth of thin film materials with novel properties and functionalities. Typically, the lattice constants of films and substrates are designed to match to minimise disorders and strains. However, significant lattice mismatches can result in higher-order epitaxy, where commensurate growth occurs with a period defined by integer multiples of the lattice constants. Despite its potential, higher-order epitaxy is rarely used to enhance material properties or induce emergent phenomena. Here, we report single-crystalline FeTe films grown via 6:5 commensurate higher-order epitaxy on CdTe(001) substrates. Scanning transmission electron microscopy reveals self-organised periodic interstitials near the interface, arising from higher-order lattice matching. Synchrotr

SUBMITTER: Sato Y 

PROVIDER: S-EPMC12680704 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature