Home▸Quantum Physics▸Magnon Dispersion in Ferromagnetic and Antiferromagnetic Lattices

🧲 Magnon Dispersion in Ferromagnetic and Antiferromagnetic Lattices

Watch spin waves ripple across a magnetic lattice and see how the magnon dispersion relation switches between a quadratic ferromagnetic branch and a linear antiferromagnetic branch as exchange coupling changes.

Quantum Physics3DModerate60 FPS⚡ Plasma

The simulation shows spin precession propagating across a 2D lattice as a spin wave, letting you compare how the dispersion relation and group velocity change between ferromagnetic (quadratic, single-branch) and antiferromagnetic (linear, two-branch) exchange coupling.

🔬 What It Demonstrates

🎮 How to Use

Toggle between ferromagnetic and antiferromagnetic exchange coupling and adjust the coupling-strength slider to see the dispersion curve reshape and the visible spin-wave group velocity change accordingly.

💡 Did You Know?

The quadratic ferromagnetic magnon dispersion directly explains Bloch's T-to-the-three-halves law, the observed temperature dependence by which a ferromagnet's magnetization decreases as temperature rises from absolute zero.

⚙ Under the hood

magnonspin waveferromagnetismantiferromagnetismexchange couplingcondensed matterdispersion relationquasiparticle

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install