Novel Magnetic Dispersions by Mixing Ir and Cu

We found in Sr3CuIrO6 a novel magnetism, namely strong ferromagnetic exchange anisotropy arising from antiferromagnetic superexchange the stronger the IrO6 octahedral distortion, the stronger the anisotropy.

This work should pave the way for the exploration and engineering of an entirely new class of magnetic behavior in mixed 3d-5d materials.

This work was published on August 2, 2013 in Physical Review Letters: Wei-Guo Yin, X. Liu, A. M. Tsvelik, M. P. M. Dean, M. H. Upton, Jungho Kim, D. Casa, A. Said, T. Gog, T. F. Qi, G. Cao, and J. P. Hill , "Ferromagnetic Exchange Anisotropy from Antiferromagnetic Superexchange in the Mixed 3d-5d Transition-Metal Compound Sr3CuIrO6" Phys. Rev. Lett. 111, 057202 (2013).

This work was supported by the U.S. Department of Energy Office of Science.

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