Colossal magnetoresistance in Mn2+ oxypnictides NdMnAsO(1-x)F(x) |
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Authors: | Wildman Eve J Skakle Janet M S Emery Nicolas McLaughlin Abbie C |
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Institution: | Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, UK. |
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Abstract: | Colossal magnetoresistance is a rare phenomenon in which the electronic resistivity of a material can be decreased by orders of magnitude upon application of a magnetic field. Such an effect could be the basis of the next generation of memory devices. Here we report CMR in the antiferromagnetic oxypnictide NdMnAsO(1-x)F(x) as a result of competition between an antiferromagnetic insulating phase and a paramagnetic semiconductor upon application of a magnetic field. Mn(2+) oxypnictides are relatively unexplored, and tailored synthesis of novel compounds could result in an array of materials for further investigation and optimization. |
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