Dataset for "Edge Defects and Energy Barriers in Skyrmion Monolayers"

Dataset for "Edge Defects and Energy Barriers in Skyrmion Monolayers"

This dataset provides data from a series of atomistic simulations from experiments on the effects of varying the size of defects on a monolayer of Cobalt, where defects of three shapes (square, triangle and bezier) are varied in size, and the effect of the demagnetising interaction viewed.
The simulations were performed with the open-source software Fidimag (10.5334/jors.223, 10.5281/zenodo.2650286).

The dataset is split into several directories, and the data is either stored in VTK files (which can be opened by a variety of free tools, for e.g. Paraview and MayaVi, TecPlot), and CSV files and NDT files, which can be opened in standard numerical data libraries and software (e.g. Pandas, NumPy, Excel, LibreOffice Calc) or opened in a text editor for viewing directly.

energy-barrier-data

This folder contains space delimited NDT files which give the energy information history across a set of simulations. This contains 6 folders:
squ-nd, tri-nd, bez-nd and squ-wd, tri-wd, bez-wd which correspond to data for the square, triangle and bezier defects, calculated without and with the demagnetising interaction respectively.

For the triangle datasets, the files are labelled with the width of the defect. For the square datasets, the files are labelled with the width and height of the defect. For the bezier datasets, the files are labelled with the width, and the height of the control point for a bezier curve.

Each row in the data file gives the energy of a set of images in the Nudged Elastic Band Method at a given iteration; thus, the final row is the converged energy data.

energy-term-data-triangles

This folder contains more detailed energy information calculated for the converged triangle images. These CSV files are labelled with the width of the defect, and 'nd' for no demagnetising interaction, and 'wd' if the demagnetistaion is present (e.g. 'w_0.5_nd.csv' is the file for a width 0.5nm triangular defect with no demagnetising interaction). These files have columns corresponding to the different magnetic energies (Exchange, Anisotropy, DMI, Demagnetising) in Joules for each image in the NEBM calculation, along with the total energy of each state.

vtks

This folder contains VTK files of some of the states used to create figures. There are six folders 
* no-defect and no-defect-wd which correspond to the set of images from simulations of the nanostructure with no defect present
* squ-5.0_5.0 and squ-wd-5.0_5.0 which are for the sample with a 5.0nm by 5.0nm defect
* tri-7.0 and tri-wd-7.0 which are for the sample with a triangular defect of width 7.0nm.