READ ME File For 'This dataset supports the publication: "Supertoroidal light pulses as electromagnetic skyrmions propagating in free space" Dataset DOI: 10.5258/SOTON/D1901 Date that the file was created: July, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Yijie Shen, University of Southampton ORCID https://orcid.org/0000-0002-6700-9902 Related projects: The authors acknowledge the supports of the MOE Singapore (MOE2016-T3-1-006), the UKs Engineering and Physical Sciences Research Council (grant EP/M009122/1, Funder Id: http://dx.doi.org/10.13039/501100000266), the European Research Council (Advanced grant FLEET-786851, Funder Id: http://dx.doi.org/10.13039/501100000781), and the Defense Advanced Research Projects Agency (DARPA) under the Nascent Light Matter Interactions program. -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data, or limitations of reuse:CC-BY This dataset supports the publication:Supertoroidal light pulses as electromagnetic skyrmions propagating in free space AUTHORS:Y. Shen, Y. Hou, N. Papasimakis, and N. I. Zheludev TITLE:upertoroidal light pulses as electromagnetic skyrmions propagating in free space JOURNAL:Nature Communications PAPER DOI IF KNOWN:https://doi.org/10.1038/s41467-021-26037-w -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains: - Fig. 1 presents plots of the spatial profiles of the real parts of electric fields of Equation (4) of the two pulses of α=1 and α=5 for q2=100q1 and t = 0, ±q2/(4c), and ±q2/(2c). - Fig. 2a-b present plots of the isoline plots of the electric fields of Equation (4) in the x-z plane for the two pulses shown in Fig.1. - Fig. 3a-b present plots of isoline and arrow plots of the magnetic fields of Equations (5,6) in the x-z plane for the two pulses shown in Fig.1. - Fig. 4a-b present plots of contour and arrow plots of the Poynting vector fields in the x-z plane for the two pulses shown in Fig.1. - Fig. 5a-b present plots of the isoline plot of the logarithm distributions of electric and magnetic fields in the x-z plane for for the pulse of the real part of Equations (4-6) for q2=100q1, t = 0, and α=20. - Fig. 6a-b presents the numbers and positions (a and b) of on-axis saddle-singularities of the magnetic field of the pulse in Fig.5 within the range of z 2 [0; 80q1], versus α. File list: - Fig1code.txt: The MATLAB code to generate data in Fig.1. - Fig2a.mat: 1601x801 matrix containing the values of electric field in Fig2a. - Fig2b.mat: 1601x801 matrix containing the values of electric field in Fig2b. - Fig3ar.mat: 1601x801 matrix containing the values of radial component of magnetic field in Fig3a. - Fig3az.mat: 1601x801 matrix containing the values of longitudinal component of magnetic field in Fig3a. - Fig3br.mat: 1601x801 matrix containing the values of radial component of magnetic field in Fig3b. - Fig3bz.mat: 1601x801 matrix containing the values of longitudinal component of magnetic field in Fig3b. - Fig4ar.mat: 1601x801 matrix containing the values of radial component of Poynting vector field in Fig4a. - Fig4az.mat: 1601x801 matrix containing the values of longitudinal component of Poynting vector field in Fig4a. - Fig4br.mat: 1601x801 matrix containing the values of radial component of Poynting vector field in Fig4b. - Fig4bz.mat: 1601x801 matrix containing the values of longitudinal component of Poynting vector field in Fig4b. - Fig5a.mat: 1601x801 matrix containing the values of electric field in Fig5a. - Fig5br.mat: 1601x801 matrix containing the values of radial component of magnetic field in Fig5b. - Fig5bz.mat: 1601x801 matrix containing the values of longitudinal component of magnetic field in Fig5b. - Fig6alf.mat: 1x581 array containing the values of coordinate of α in Fig6. - Fig6alf.mat: 1x581 array containing the values of singularity number in Fig6. Date that the file was created: July, 2021