Couplings at oxide interfaces

Materials Colloquium 2020 - December, 2nd, 16:30

Zoom (https://ethz.zoom.us/j/97129921502)

Marta Gibert (Physik-Institut, University of Zurich)

The large variety of functionalities exhibited by transition metal oxides places them as highly attractive materials both from a fundamental and applied point of view. Furthermore, the possibility to assemble oxides in epitaxial heterostructures allows us to further tune their properties and even access novel electronic behaviours not displayed by the parent compounds. Here, we will use atomically-controlled NdNiO3/SmNiO3 superlattices to show that the length scale of the interfacial coupling between metal and insulator phases is determined by balancing the energy cost of the boundary between a metal and an insulator and the bulk phase energies [1]. The structure-property relation of ferromagnetic La2NiMnO6 thin films as their thickness is reduced to just few unit cells will also be presented.

[1] Dominguez et al., Nature Materials 19, 1182 (2020)

Overview Materials Colloquium 2020