Magnetotransport at domain walls in BiFeO 3

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

Research output: Contribution to journalArticlepeer-review

113 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 BiFeO 3 by probing ordered arrays of 109°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
JournalPhysical review letters
Volume108
Issue number6
DOIs
Publication statusPublished - 2012 Feb 9

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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