Colossal Magnetoresistance in the Mn2+ Oxypnictides NdMnAsO1-xFx

Abstract

Colossal magnetoresistance (CMR) 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 magnetic memory devices. Here we report CMR in the antiferromagnetic oxypnictide NdMnAsO1-xFx as a result of competition between an antiferromagnetic insulating phase with strong electron correlations and a paramagnetic semiconductor upon application of a magnetic field. The discovery of CMR in antiferromagnetic Mn2+ oxypnictide materials could open up an array of materials for further investigation and optimisation for technological applications.

References in corpus (7)

• Complexity in Strongly Correlated Electronic Systems
• Dynamic Jahn-Teller Effect and Colossal Magnetoresistance in $L{a}_{1-x}{A}_{x}Mn{O}_3$
• Superconductivity and Phase Diagram in the Iron-based Arsenic-oxides ReFeAsO1-delta (Re = rare earth metal) without F-Doping
• Crystal structure and phase transitions across the metal-superconductor boundary in the SmFeAsO1-xFx (0 < x < 0.20) family
• Inflection point in the magnetic field dependence of the ordered moment of URu2Si2 observed by neutron scattering in fields up to 17 T
• A variable temperature study of the crystal and magnetic structures of the giant magnetoresistant materials LnMnAsO (Ln = La, Nd)
• Nd induced Mn spin-reorientation transition in NdMnAsO

Cited by in corpus (7)

• Short- and long-range magnetic order in LaMnAsO
• Superconductivity induced by hydrogen anion substitution in 1111-type iron arsenides
• Absence of Colossal Magnetoresistance in the Oxypnictide PrMnAsO0.95F0.05
• First Principles Study of the Magnetic Properties of LaOMnAs
• The Electronic and Magnetic Properties of Magnetoresistant Nd1-xSrxMnAsO Oxyarsenides
• Common effect of chemical and external pressures on the magnetic properties of $R$CoPO ($R$ = La, Pr, Nd, Sm). II
• A High Pressure Neutron Study of Colossal Magnetoresistant NdMnAsO0.95F0.05