Title: Magnetotransport at Domain Walls in BiFeO3
Authors: He, Q.
Yeh, C-H.
Yang, J-C.
Singh-Bhalla, G.
Liang, C-W.
Chiu, P-W.
Catalan, G.
Martin, L. W.
Chu, Y-H.
Scott, J. F.
Ramesh, R.
材料科學與工程學系
Department of Materials Science and Engineering
Issue Date: 9-Feb-2012
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.
URI: http://dx.doi.org/10.1103/PhysRevLett.108.067203
http://hdl.handle.net/11536/15214
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.108.067203
Journal: PHYSICAL REVIEW LETTERS
Volume: 108
Issue: 6
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