Home▸Physics & Mechanics▸Rashba Spin-Orbit Splitting in a 2D Electron Gas

🌀 Rashba Spin-Orbit Splitting in a 2D Electron Gas

Explore how structural inversion asymmetry splits a 2D electron gas band into two spin-momentum-locked parabolas, with a tunable Rashba coefficient controlling the resulting spin texture.

Physics & Mechanics3DModerate60 FPS

The simulation shows a spin-degenerate 2D parabolic band splitting into two offset paraboloids as Rashba coupling is switched on, with in-plane spin arrows winding around each constant-energy circle in momentum space.

🔬 What It Demonstrates

🎮 How to Use

Use the Rashba coefficient slider to tune the splitting strength and momentum offset, and rotate the view to inspect how spin orientation locks perpendicular to momentum around each Fermi circle.

💡 Did You Know?

The Datta-Das spin transistor, proposed in 1990, was one of the first devices designed to exploit gate-tunable Rashba spin-orbit coupling to control electron spin purely with voltages, without any magnetic field.

⚙ Under the hood

Explore how structural inversion asymmetry splits a 2D electron gas band into two spin-momentum-locked parabolas, with a tunable Rashba coefficient controlling the resulting spin texture.

rashba effectspin-orbit couplingspintronics2degband structurespin texturesemiconductor physicscondensed matter

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