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The files linked to this Digital Object Identifier (DOI) are associated with the publication:

Jack R. Greenwood and Damian P. Hampshire
"Critical current density in high-field superconductors described using wave-particle duality"
Superconductor Science and Technology
Focus on The Jan Evetts SuST Award, 2026
https://doi.org/10.1088/1361-6668/ae5f4d

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IF YOU USE ANY OF THESE DATA, PLEASE CITE THE ABOVE SuST PUBLICATION AS THE SOURCE.
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Files in .csv format have been created for each Figure in the publication. This readme describes the contents of each .csv file. 
The values in each file are separated by commas. Cells that contain '--' correspond to zeros, NaN's, or unmeasured values.
Widely used software (e.g., Excel or Notepad or Python) can be used to open the files and interpret the data.
It is recommended that the error surface files (Fig4_inset.csv, and Fig9a.csv -> Fig9d.csv) are opened using Python (with matplotlib's "imshow" or similar) to most effectively interpret and manipulate the data.

A description of the contents of each file is now given below:

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Fig1.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the experimental parameter or measured quantity, and its units  (they are the column headers).
The Jc data for each combination of field, temperature, and strain are in different columns.

Fig2a.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the experimental parameter or measured quantity, and its units  (they are the column headers).
The first 8 columns are the experimental data (scatter points) for Fig2a.
The next 8 columns contain the data used to draw the parabolas in Fig2a.
The final 2 columns contain the peak positions of the parabolas in Fig2a, indicated by the arrows in Fig2a.

Fig2b.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the experimental parameter or measured quantity, and its units  (they are the column headers).
The first 6 columns are the experimental data (scatter points) for Fig2b.
The next 6 columns contain the data used to draw the parabolas in Fig2b.
The final 2 columns contain the peak positions of the parabolas in Fig2b, indicated by the arrows in Fig2b.

Fig3.csv
This file relates to the (RE)BCO APC sample.
The first 4 rows contain the experimental parameter or measured quantity, and its units  (they are the column headers).
The first 15 columns are the scatter points for Fig3.
The next 15 columns contain the data used to draw the fit lines in Fig3.
Dedicated data columns are not provided for the inset; the inset merely shows the main dataset, but "zoomed out", over the full temperature range 0 < T < Tc*.

Fig4.csv
This file relates to the (RE)BCO APC sample.
The first 4 rows contain the Fp curve parameter or experimental parameter and its units  (they are the column headers).
The first 2 columns contain the data used to generate the Fp curve line of best fit.
The subsequent columns contain the scatter points for each combination of field orientation, strain, and temperature.

Fig4_inset.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the Bc2* values used to generate the error surface.
The first 3 columns contain the Fpmax values used to generate the error surface.
The subsequent rows and columns contain the RMS fit error values in units of GN/m3. 
One can use the file to find the RMS fit error value for a particular combination of Bc2* and Fpmax.

Fig5a.csv
This file relates to the (RE)BCO APC sample.
The first 4 rows contain the parameter or experimental parameter and its units  (they are the column headers). 
The first 2 columns contain the data used to generate the line of best fit for theta=0.
The next 12 columns contain the scatter points for theta=0, for each temperature. For a given temperature, there are 7 scatter points, going from e_app=-1% (first row) to e_app =0.5% (last row).
The next 2 columns contain the scatter points for theta=0 and e_app=0%, going from 76 K to 4.2 K (these were copied from the previous 12 columns)
The next 2 columns contain the data used to generate the line of best fit for theta=87.5.
The next 8 columns contain the scatter points for theta=87.5, for each temperature. For a given temperature, there are 7 scatter points, going from e_app=-1% (first row) to e_app =0.5% (last row).
The next 2 columns contain the scatter points for theta=87.5 and e_app=0%, going from 76 K to 40 K (these were copied from the previous 8 columns)
There are no dedicated columns for the inset; the inset just shows the data in columns 7 & 8.

Fig5b.csv
This file relates to the (RE)BCO APC sample.
The first 4 rows contain the parameter or experimental parameter and its units (they are the column headers).
The first 2 columns contain the data used to generate the line of best fit for both field orientations.
The next 12 columns contain the scatter points for theta=0, for each temperature. For a given temperature, there are 7 scatter points, going from e_app=-1% (first row) to e_app =0.5% (last row).
The next 2 columns contain the scatter points for theta=0 and e_app=0%, going from 76 K to 4.2 K (these were copied from the previous 12 columns)
The next 8 columns contain the scatter points for theta=87.5, for each temperature. For a given temperature, there are 7 scatter points, going from e_app=-1% (first row) to e_app =0.5% (last row).
The next 2 columns contain the scatter points for theta=87.5 and e_app=0%, going from 76 K to 40 K (these were copied from the previous 8 columns)
There are no dedicated columns for the inset; the inset just shows the data in columns 7 & 8.

Fig6.csv
This file relates to the (RE)BCO APC sample.
The first 4 rows contain the parameter or experimental parameter and its units (they are the column headers).
The first 48 columns contain the scatter points, for each combination of temperature and strain.
The next 48 columns contain the data used to generate the fit lines, for each combination of temperature and strain

Fig7.csv
This file relates to the (RE)BCO Non-APC sample.
The first 4 rows contain the parameter or experimental parameter and its units (they are the column headers).
The first 44 columns contain the scatter points, for each combination of temperature and magnetic field.
The next 44 columns contain the data used to generate the fit lines, for each combination of temperature and magnetic field.

Fig8.csv
This file relates to the Nb3Sn sample.
The first 4 rows contain the parameter or experimental parameter and its units (they are the column headers).
The first 128 columns contain the scatter points, for each combination of temperature and magnetic field.
The next 65 columns contain the data used to generate the fit lines, for each combination of temperature and magnetic field.

Fig9a.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the normalized effective mass values used to generate the error surface.
The first 3 columns contain the normalized G-L alpha values used to generate the error surface.
The subsequent rows and columns contain the RMS fit error values in units of GA/m2. 
One can use the file to find the RMS error value for a particular combination of normalized effective mass and G-L alpha.

Fig9b.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the normalized effective mass values used to generate the error surface.
The first 3 columns contain the normalized G-L beta values used to generate the error surface.
The subsequent rows and columns contain the RMS fit error values in units of GA/m2. 
One can use the file to find the RMS error value for a particular combination of normalized effective mass and G-L beta.

Fig9c.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the normalized effective mass values used to generate the error surface.
The first 3 columns contain the normalized G-L alpha values used to generate the error surface.
The subsequent rows and columns contain the RMS fit error values in units of GA/m2. 
One can use the file to find the RMS error value for a particular combination of normalized effective mass and G-L alpha.

Fig9d.csv
This file relates to the (RE)BCO APC sample.
The first 3 rows contain the normalized effective mass values used to generate the error surface.
The first 3 columns contain the normalized G-L beta values used to generate the error surface.
The subsequent rows and columns contain the RMS fit error values in units of GA/m2. 
One can use the file to find the RMS error value for a particular combination of normalized effective mass and G-L beta.

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Jack Greenwood
24.04.2026

email: jack.greenwood@psi.ch, d.p.hampshire@durham.ac.uk

