Magnon viewer

Open the magnon viewer, choose an example or load a JSON file, then click a point on a dispersion branch. Drag to rotate and scroll to zoom.

Export a calculation

Use the exporter for your calculation:

• Sunny — Julia
• SpinW — MATLAB
• Magnopy — Python

The exporters keep your solver’s model and convert its modes to a common JSON file. Your colleague only needs the website to view it. Files loaded with the file chooser stay in the browser.

Controls

• Amplitude / Speed / Phase: adjust the motion or pause at a chosen phase.
• Repetitions: show more magnetic cells.
• Atom / Bonds: use the same appearance controls as the phonon viewer.
• Spin arrows: change length, color, cylinder/cone width, and cone fraction. Widths are diameters in Å; length is a display scale.
• Center on atom: place the arrow’s midpoint on the atom.
• Tip path: show the tip’s complete trajectory through one cycle.
• GIF / WebM: save one animation cycle.

Arrows show spin motion, not g-weighted magnetic moments. Amplitude and playback speed are visual scales. Mode weights show relative spin-dipole weight, not neutron intensity. A mode with no dipole component has no arrow motion.

For another exporter, see the JSON format.