Persistent conductive footprints of 109o domain walls in bismuth ferrite films

I. Stolichnov, M. Iwanowska, E. Colla, B. Ziegler, I. Gaponenko, P. Paruch, Mark Huijben, Augustinus J.H.M. Rijnders, N. Setter

Research output: Contribution to journalArticleAcademicpeer-review

40 Citations (Scopus)

Abstract

Using conductive and piezoforce microscopy, we reveal a complex picture of electronic transport at weakly conductive 109° domain walls in bismuth ferrite films. Even once initial ferroelectric stripe domains are changed/erased, persistent conductive paths signal the original domain wall position. The conduction at such domain wall “footprints” is activated by domain movement and decays rapidly with time, but can be re-activated by opposite polarity voltage. The observed phenomena represent true leakage conduction rather than merely displacement currents. We propose a scenario of hopping transport in combination with thermionic injection over interfacial barriers controlled by the ferroelectric polarization.
Original languageUndefined
Article number132902
Pages (from-to)-
Number of pages5
JournalApplied physics letters
Volume104
Issue number13
DOIs
Publication statusPublished - 2014

Keywords

  • METIS-306819
  • IR-94987

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