Speaker
Description
Low temperature Scanning Tunneling Microscopy (STM) and Spectroscopy (STS) provide important insights to materials properties which should be captured and stored following the FAIR principles. We have developed a data format proposal for the NeXus community standard which provides a rich vocabulary for representing all important experimental data and metadata. An end-to-end solution embedded into the NOMAD[1] research data management platform is presented which also demonstrates the research experience as the new standard is in a daily use in real-life laboratory environment.
With the help of NeXus[2] that provides a flexible data modelling platform with a community standardisation process, we created the generic data model NXsts[3] which supports both STM and STS experiments as well as the special needs for covering experiments performed at low temperature. Additionally to modelling experimental data and related metadata, the NXsts vocabulary also supports handling data-analysis results (e.g. topography and dI/dV). In this work, we show how experimental data can be converted into the NeXus standard and used efficiently in NOMAD.
References
[1] Scheidgen et al., (2023). NOMAD: A distributed web-based platform for managing materials science research data. Journal of Open Source Software, 8(90), 5388, https://doi.org/10.21105/joss.05388
[2] Könnecke, M., et al., The NeXus data format, J. Appl. Crystallogr. 2015, 48, 1, 301-305.
[3] https://fairmat-nfdi.github.io/nexus_definitions/classes/contributed_definitions/NXsts.html#nxsts
Keywords
FAIR data, NOMAD, NeXus, scanning probe, STM, STS