ISIS Neutron and Muon Source Data Journal

Exploring novel current-driven magnetization reversal using polarised neutron reflectometry

Abstract: This experiment will clarify the novel field-free current-driven magnetization switching we have recently observed in ferromagnet/heavy metal (FM/HM) ultra-thin film bilayers. We will detect the influence of the spin-orbit torque on the interface magnetization in a model device structure; a long thin bilayer wire allowing the high current density for spin-orbit torque switching whilst also providing scattering volume for detection of a small magnetic signal using polarised neutron reflectivity. PNR will distinguish between plausible current-induced magnetization configurations; a novel current-driven reversal occurs within a thin region close to either the FM/HM or substrate/FM interface, producing a twisted `exchange-spring' state. These measurements will demonstrate the capabilities of PNR to determine functional information from model device structures.

Principal Investigator: Dr Aidan Hindmarch
Experimenter: Dr Raymond Fan
Experimenter: Mr kalel Alsaeed
Experimenter: Dr Paul Steadman
Local Contact: Dr Christy Kinane
Experimenter: Dr Andrew Caruana
Experimenter: Dr David Burn
Experimenter: Dr Kiranjot Kiranjot

DOI: 10.5286/ISIS.E.RB2220269

ISIS Experiment Number: RB2220269

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 Aidan Hindmarch et al; (2023): Exploring novel current-driven magnetization reversal using polarised neutron reflectometry, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2220269

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