@article{33475,
  keywords = {metals, Perovskite, metallic, metal, chemistry, Electric fields, macromolecular substances, Polarization, Domain walls, Ferroelectric materials, Nanostructures, Materials testing, ferroelectricity, Article, Metal insulator boundaries, Semiconductor insulator boundaries, Metal insulator transition, Scanning probe microscopy, Surface properties, electromagnetic field, surface property, electric conductivity, nanomaterial, Scanning probes, Ferroelectric, lead-zirconate, MIT, Chemical modification, conformation, macromolecule, radiation exposure, ultrastructure, Electromagnetic Fields, Molecular Conformation},
  author = {P Maksymovych and A.N Morozovska and P Yu and E.A Eliseev and Y.-H Chu and Ramamoorthy Ramesh and A.P Baddorf and S.V Kalinin},
  title = {Tunable metallic conductance in ferroelectric nanodomains},
  abstract = {Metallic conductance in charged ferroelectric domain walls was predicted more than 40 years ago as the first example of an electronically active homointerface in a nonconductive material. Despite decades of research on oxide interfaces and ferroic systems, the metal-insulator transition induced solely by polarization charges without any additional chemical modification has consistently eluded the experimental realm. Here we show that a localized insulator-metal transition can be repeatedly induced within an insulating ferroelectric lead-zirconate titanate, merely by switching its polarization at the nanoscale. This surprising effect is traced to tilted boundaries of ferroelectric nanodomains, that act as localized homointerfaces within the perovskite lattice, with inherently tunable carrier density. Metallic conductance is unique to nanodomains, while the conductivity of extended domain walls and domain surfaces is thermally activated. Foreseeing future applications, we demonstrate that a continuum of nonvolatile metallic states across decades of conductance can be encoded in the size of ferroelectric nanodomains using electric field. © 2011 American Chemical Society.},
  year = {2012},
  journal = {Nano Letters},
  volume = {12},
  number = {1},
  pages = {209-213},
  issn = {15306984},
  doi = {10.1021/nl203349b},
  note = {cited By 99},
  language = {eng},
}