Condensed Matter & Materials Physics
2 terms
Giant Magnetoresistance (GMR)
Condensed Matter & Materials Physics
% (Resistance Change Ratio)
A quantum spintronic phenomenon where electrical resistance drops dramatically when adjacent ferromagnetic layers align magnetically parallel in an external field.
GMR = (R_AP - R_P) / R_P × 100%
Graphene
Condensed Matter & Materials Physics
v_F ≈ 10⁶ m/s (Fermi Velocity)
A single two-dimensional layer of carbon atoms bound in a hexagonal honeycomb crystal lattice.
E(k) = ± ℏ v_F |k| (Dirac Cone Dispersion)