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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Liu M,Hoffman J,Wang J,Zhang J,Nelson-Cheeseman B,Bhattacharya Adoi
10.1038/srep01876subject
Has Abstractpub_date
2013-01-01 00:00:00pages
1876issn
2045-2322pii
srep01876journal_volume
3pub_type
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