@article{33471, keywords = {Magnetoresistance, Materials properties, Multiferroics, Domain walls, Magnetoelectronics, Electric resistance, Temperature dependent, Emergent behaviors, Ordered array, Structural interface, Transport mechanism}, author = {Q He and C.-H Yeh and J.-C Yang and G Singh-Bhalla and C.-W Liang and P.-W Chiu and G Catalan and L.W Martin and Y.-H Chu and J.F Scott and Ramamoorthy Ramesh}, title = {Magnetotransport at domain walls in BiFeO 3}, 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. © 2012 American Physical Society.}, year = {2012}, journal = {Physical Review Letters}, volume = {108}, number = {6}, issn = {00319007}, doi = {10.1103/PhysRevLett.108.067203}, note = {cited By 103}, language = {eng}, }