Probing spin transport in unconventional magnetic insulators

The transport of spin information within magnetic insulators has become an area of intense interest, particularly due to new methods of injecting pure spin currents in insulators via the spin Hall effect, e.g. through nonlocal spin injection/detection geometries. However, so far these geometries have predominantly been extended to insulators with relatively simple ferromagnetic/antiferromagnetic order. Here, we use similar methods to inject spins into less conventional magnetic materials, including a material with prominent frustrated interactions as well as a multiferroic material. We hope these measurements will help in understanding how these measurement techniques extend beyond simple ferro- and antiferromagnetic systems.