title: Non-volatile ferroelastic switching of the Verwey transition and resistivity of epitaxial Fe3O4/PMN-PT (011).
abstract: A central goal of electronics based on correlated materials or 'Mottronics' is the ability to switch between distinct collective states with a control voltage. Small changes in structure and charge density near a transition can tip the balance between competing phases, leading to dramatic changes in electronic and magnetic properties. In this work, we demonstrate that an electric field induced two-step ferroelastic switching pathway in (011) oriented 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) substrates can be used to tune the Verwey metal-insulator transition in epitaxial Fe3O4 films in a stable and reversible manner. We also observe robust non-volatile resistance switching in Fe3O4 up to room temperature, driven by ferroelastic strain. These results provides a framework for realizing non-volatile and reversible tuning of order parameters coupled to lattice-strain in epitaxial oxide heterostructures over a broad range of temperatures, with potential device applications.
authors.affiliation: Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA. mingliu@anl.gov
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.forename: Jason
authors.initials: J
authors.lastname: Hoffman
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Jinxing
authors.initials: J
authors.lastname: Zhang
authors.forename: Brittany
authors.initials: B
authors.lastname: Nelson-Cheeseman
authors.forename: Anand
authors.initials: A
authors.lastname: Bhattacharya