Rashba Spin-Orbit Coupling
2DEG helical bands, spin texture & Berry phase
Parameters
Rashba α (eV·Å):
0.50
Zeeman B (T):
0.00
Fermi energy E_F (eV):
0.20
m*/m:
0.20
Rashba Hamiltonian:
H = ℏ²k²/2m* + α(k×σ)·ẑ
E±(k) = ℏ²k²/2m* ± αk
Spin splitting: ΔE = 2αk
Berry phase: γ = ±π
(helical Fermi surfaces)
k_F± loading...