Dataset for "Fractional Skyrmion Tubes in 3D Magnetic Nanowires"

Double_Helix_Two_Vortex_State_Hysteresis_Loop.mx3 + .ovf: Script and initial state for hysteresis loop simulations (Figs. 2e/f/k). Double_Helix_Two_Vortex_State_Minor_Hysteresis_Loop.mx3 + Hybrid_Vortex-AP_State_MinorLoop.ovf: For minor loop simulations starting from hybrid vortex–AP states (Fig. 3c + Supplementary). Double_Helix_Two_Vortex_State_Topological_Charge_Variation.mx3 + .ovf: For topological charge variation in two-vortex state (Figs. 4c/d).

Double_Helix_Fractional_Skyrmion_State_Topological_Charge_Variation.mx3 + .ovf: For topological charge variation in fractional Skyrmion state (Figs. 4e/f/g/h). 2) XMCD Contains original ptychographic XMCD data from SOLEIL (beamtime 20210958, June 2022), processed from CL and CR reconstructions, aligned and normalized. Data saved as .dat arrays and .png images with field values in filenames. Includes metadata in [figure_name]_data_list.csv.

Fig2: Data for Fig. 2; includes Fig2_fitparameters.dat (linecut fit results for experimental loops in Fig. 2j). SFig4: Data for Fig. 2 and Supplementary Fig. 4. SFig5-major: Data for Fig. 3 and Supplementary Fig. 5.

SFig5-minor: Data for Fig. 3 and Supplementary Figs. 5 & 6. SFig9: Data for Supplementary Fig. 9. 3) SEM Contains an original SEM image of the fabricated double-helix structures used in Fig. 1. 4) TEM Contains original TEM images of the FEBID Co nanostructure, used in Supplementary Fig. 7. Requirements The code can be executed using Python , MATLAB , Paraview and Mumax3 , depending on the file.

The images can be opened with any standard image software. Licenses The data is licensed under CC-BY, the code is licensed under MIT.