ISIS Neutron and Muon Source Data Journal

Enhanced magnon transport through an amorphous magnetic insulator

Abstract: Magnonics research is focused on the transport of spin information via spin-wave, or magnon, excitations. Due to its exceptionally low damping, the magnetic insulator Yttrium Iron Garnet (YIG) is considered the most prominent material in this field. New research has been stimulated by a report of long (µm) magnon diffusion lengths in amorphous YIG (a-YIG) where there is no long range magnetic order. Similar experiments have failed to reproduce the results and spin-pumping data provides a much lower (3.6nm) spin diffusion length. We have recently measured a 28nm spin diffusion length in a-YIG (28nm) and hypothesise that samples of a-YIG may differ depending on growth conditions. In this proposal we will use polarized neutron reflectometry to investigate a-YIG in order to see if deviations away from the expected M = 0 emu/cc can explain the longer spin diffusion length in our samples.

Principal Investigator: Dr Stuart Cavill
Experimenter: Mr Jack Pearce
Local Contact: Dr Christy Kinane
Experimenter: Dr Andrew Caruana

DOI: 10.5286/ISIS.E.RB2220062

ISIS Experiment Number: RB2220062

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Stuart Cavill et al; (2022): Enhanced magnon transport through an amorphous magnetic insulator, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2220062

Data is released under the CC-BY-4.0 license.