Magnetotransport at Domain Walls in BiFeO3

Q. He*, C-H. Yeh, J-C. Yang, G. Singh-Bhalla, C-W. Liang, P-W. Chiu, G. Catalan, L. W. Martin, Y-H. Chu, J. F. Scott, R. Ramesh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)

Abstract

Domain walls in multiferroics can exhibit intriguing behaviors that are significantly different from the bulk of the material. We investigate strong magnetoresistance in domain walls of the model multiferroic BiFeO3 by probing ordered arrays of 109 degrees domain walls with temperature-and magnetic-field-dependent transport. We observe temperature-dependent variations in the transport mechanism and magnetoresistances as large as 60%. These results suggest that by locally breaking the symmetry of a material, such as at domain walls and structural interfaces, one can induce emergent behavior with properties that deviate significantly from the bulk.

Original languageEnglish
Article number067203
Number of pages5
JournalPhysical Review Letters
Volume108
Issue number6
DOIs
Publication statusPublished - 9 Feb 2012

Keywords

  • MAGNETIC-PROPERTIES
  • NANOSCALE CONTROL
  • EXCHANGE BIAS
  • THIN-FILMS
  • MANGANITES

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