%0 Journal Article
%K Magnetoresistance
%K Materials properties
%K Multiferroics
%K Domain walls
%K Magnetoelectronics
%K Electric resistance
%K Temperature dependent
%K Emergent behaviors
%K Ordered array
%K Structural interface
%K Transport mechanism
%A Q He
%A C.-H Yeh
%A J.-C Yang
%A G Singh-Bhalla
%A C.-W Liang
%A P.-W Chiu
%A G Catalan
%A L.W Martin
%A Y.-H Chu
%A J.F Scott
%A Ramamoorthy Ramesh
%B Physical Review Letters
%D 2012
%G eng
%R 10.1103/PhysRevLett.108.067203
%T Magnetotransport at domain walls in BiFeO 3
%V 108
%X 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.