Dataset for "The Search for Spontaneous Edge Currents in Sr2RuO4 Mesa Structures with Controlled Geometrical Shapes"

Datasets underpinning the 9 Figures for "The Search for Spontaneous Edge Currents in Sr2RuO4 Mesa Structures with Controlled Geometrical Shapes" in Scientific Reports. The primary data files are scanning Hall microscopy (SHM) images of pancake vortices captured at temperatures in the range 0.3-1.6K. Also included are magnetic susceptibility data for the measured samples, 1D linescans across individual images and maps of rms field roughness in images as a function of cooling field. Simulation results for the expected edge fields and a model fit to the vortex profile at the base temperature of the microscope are also included.

Keywords:
Unconventional Superconductivity, Strontium Ruthenate, Scanning Hall Microscopy
Subjects:
Materials sciences

Cite this dataset as:
Bending, S., Curran, P., Gibbs, A., Mackenzie, A., 2023. Dataset for "The Search for Spontaneous Edge Currents in Sr2RuO4 Mesa Structures with Controlled Geometrical Shapes". Bath: University of Bath Research Data Archive. Available from: https://doi.org/10.15125/BATH-01304.

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Data

Data for archive.zip
application/zip (3MB)
Creative Commons: Attribution 4.0

Zip file containing the datasets underpinning the 9 Figures for "The Search for Spontaneous Edge Currents in Sr2RuO4 Mesa Structures with Controlled Geometrical Shapes" in Scientific Reports.

Creators

Simon Bending
University of Bath

Peter Curran
University of Bath

Alex Gibbs
University of St Andrews

Andrew Mackenzie
University of St Andrews

Contributors

University of Bath
Rights Holder

Coverage

Collection date(s):

From 1 March 2012 to 30 September 2016

Documentation

Data collection method:

The primary datasets are scanning Hall microscopy (SHM) images. These have been captured with a modified low-temperature scanning tunnelling microscope (STM) where the tunnelling tip has been replaced by a custom-fabricated semiconductor chip. The Hall probe is patterned in the two-dimensional electron gas of a GaAs/AlGaAs heterostructure, defined by the intersection of two 800 nm wide wires situated about 5 micrometres from the Au-coated corner of a deep mesa etch that acts as an integrated STM tip. The Hall probe is mounted at an angle of about 1 degree with respect to the sample plane, with the STM tip being the closest point to the sample surface. In operation the sample is first approached towards the sensor until tunnelling is established and then retracted about 100 nm for rapid ‘flying mode’ scanning with the active Hall probe about 200 nm above the sample and a spatial resolution of about 800 nm. In this way quantitative maps of the z-component of magnetic induction can be captured non-invasively. Images shown in this manuscript have been captured in the range T= 0.3-1.6 K when the full scan range of our piezotube is approximately 14 µm × 14 µm.

Data processing and preparation activities:

With the exception of images shown in Figure 4 the SHM data in the archive are raw as-captured data without any post-processing.

Technical details and requirements:

Data captured using bespoke Nanomagnetics Instruments imaging software.

Additional information:

The SHM image datasets are formatted as the magnetic induction in Gauss measured at each point on a 128 × 128 array of pixel positions (corresponding to the spatial location of the Hall sensor in the plane parallel to the sample). At a measurement temperature in the range T= 0.3-1.6 K this corresponds to a scan range of approximately14 µm × 14 µm.

Documentation Files

Readme.txt
text/plain (2kB)
Creative Commons: Attribution 4.0

Funders

Engineering and Physical Sciences Research Council
https://doi.org/10.13039/501100000266

Generation, Imaging and Control of Novel Coherent Electronic States in Artificial Ferromagnetic-Superconducting Hybrid Metamaterials and Devices
EP/J010626/1

Publication details

Publication date: 4 August 2023
by: University of Bath

Version: 1

DOI: https://doi.org/10.15125/BATH-01304

URL for this record: https://researchdata.bath.ac.uk/id/eprint/1304

Related papers and books

Curran, P. J., Bending, S. J., Gibbs, A. S., and Mackenzie, A. P., 2023. The search for spontaneous edge currents in Sr2RuO4 mesa structures with controlled geometrical shapes. Scientific Reports, 13(1). Available from: https://doi.org/10.1038/s41598-023-39590-9.

Contact information

Please contact the Research Data Service in the first instance for all matters concerning this item.

Contact person: Simon Bending

Departments:

Faculty of Science
Physics

Research Centres & Institutes
Centre for Nanoscience and Nanotechnology