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.
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.
Rashba coefficient slider, momentum-space rotation, and constant-energy circle selector
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.
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.
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.
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.
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.