Publication Type:Journal Article
Source:Physical Review Letters, Volume 108, Number 6 (2012)
Keywords:Domain walls, Electric resistance, Emergent behaviors, Magnetoelectronics, magnetoresistance, Materials properties, Multiferroics, Ordered array, Structural interface, Temperature dependent, Transport mechanism
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.
cited By 103