Emergent interface vibrational structure of oxide superlattices.

ABSTRACT: As the length scales of materials decrease, the heterogeneities associated with interfaces become almost as important as the surrounding materials. This has led to extensive studies of emergent electronic and magnetic interface properties in superlattices^1-9. However, the interfacial vibrations that affect the phonon-mediated properties, such as thermal conductivity^10,11, are measured using macroscopic techniques that lack spatial resolution. Although it is accepted that intrinsic phonons change near boundaries^12,13, the physical mechanisms and length scales through which interfacial effects influence materials remain unclear. Here we demonstrate the localized vibrational response of interfaces in strontium titanate-calcium titanate superlattices by combini

SUBMITTER: Hoglund ER 

PROVIDER: S-EPMC8791828 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature